OK Canuck, I have some time now so I'll chime in with some initial thoughts and then I'll have time to review lineups and other teams in league to get a better idea of what's going on.
First my usual disclaimer with Petco: My only team there did horribly so I am in no way whatsoever professing to know anything.
Also in re: to Petco the best advise I always give is to read Luckyman's thread in the strategy forum: The importance of ballpark more to it than BPs.
Final disclaimer: In no way do I like to even suggest dropping players, if for whatever reason we mention a player or two in an unfavorable way by no means do I suggest dropping him.
O.K. now.
First thing I did was to just take overall salary figures to see where you stand now in relation to the Wolverines, to my surprise it was the Wolverines that had the lower salary, you lost 8.568 Mil through drops and PUs, in my taste it is a bit high, I usually max my losses at around 2-2.5 Mil...still the team won, so good job rebuilding there. Your current team, the Wildcats has a healthier 77.944 salary so the edge goes Wildcats there.
Now, when it comes to the W-L record of the team a lot of factors outside your team come into play, for example if one team plays in a league full of Coors and Ameriquests the results will be quite different from another duplicate team that is in up against Safecos and Dodger Stadiums. Opposite defenses, managerial tendencies, lineups, bullpens... for that I'd like to go through the team links in more depth but at first sight:
I took some basic team and individual stats to run some numbers: Here the problems start becoming more apparent: The Wolverines had an ERA of 4 and WHIP of 1.29, both a bit high IMO for Petco. I'd aim for an ERA under 4 and a WHIP under 1.20. But the Wildcats have an even higher ERA (4.23) and WHIP (1.31) when I checked the stats and wrote them down your ERA was 4.71 and WHIP 1.38 both waaaay to high for a Petco team. However since then you've gone on a pretty good 12-3 run so: Congrats on that :!: 8)
Why? well for one (to echo Socal) Loretta in 2B is bound to hurt your pitching, Socal is right, every time Loretta's defense is challenged there is a chance he'll let the ball through, make an error or make a great play. There'll be some singles your pitchers let through with the wildcats that with the wolverines' Cora would've caught, but in the stats sheets they just go as hit vs pitcher. In general I think Socal is very much right in his observations. Though Izturis is a defensive improvement on Clayton, Pierre and Loretta are downgrades on Cora and Kotsay. BTW I don't have the defensive comparison charts link handy but I don't think Amezega is THAT much of an improvement over Loretta in 2B, he is a 2 but e24 or something like that. Check the charts if you can between the two of them and Cora and you'll see what socal was refering to.
Now that takes us to the pitching. With the Wolverines you had 28.75 mil allocated as opposed to the Wildcats' 24.44. If you see it from a certain POV, every 10 games:
Wolverines pitch Schilling 3 times, Westbrook 3 times, Eaton and Milton twice, in comparison the Wildcats are sending Halladay, Greinke, Washburn, Capuano and Sabathia twice. I know Schilling was a late addition but between him and Westbrook you had a good chance of winning 6 out of every 10 games. With the Wildcats only Halladay gives you a solid shot, that's a loss from 60% to 20%. I think Greinke and Sabathia are a good fit in Petco...but so are Eaton and Milton so that's a wash. But by having two stronger arms leading your 4 man rotation the Wolverines had the chance of using Very, Very effectively your two big guns in the pen (Gordon and Nathan) whereas the Wildcats' weaker top to bottom rotation will extend Gordon and Rivera to the point where more often they won't be available hence the higher IP count of Sanchez and Riske.
Now one problem I see with Greinke and Capuano is that whereas they have several BPHRs that become moot in Petco they also have some direct hit HRs so that might not be too good to have.
Anyway, onto the offense:
I think the Wolverines had a slightly better source of natural OBP, which I believe helps a ton in Petco. Kotsay, Abreu, Berkman, Thomas & Cora come to mind. BUT your OBPs are somewhat similar .347 for the wolverines vs .343 of the wildcats AND your SLG is higher with the Wildcats .436 vs .391 of the Wolverines so... this poses an interesting question:
How can you have two teams, pitching staff yielding at the moment fairly similar stats:
Wolv vs. WildCs
ERA - 4.00 vs 4.23
WHIP - 1.29 vs 1.31
Offense slightly better in one:
OBP - .347 vs .343
SLG - .391 vs .436
And still have a rough time with the team with the better offense?
All I can see now is that the Wolverines were a fairly efficient team. It's numbers indicate that it should've scored 743 runs, in actuality it scored 740, that's pretty even on efficiency, the Wildcats' on the other hand have a fairly inefficient offense: The stats indicate you should've scored 409 runs whereas you've scored only 375. Thats a differential of -34 runs. When I first gathered your stats 15 games ago your differential was at -25 so the gap is growing.
Keep an eye for what is making the Wildcats' offense a bit clunky, look for high # of DPs, high numbers of caught stealing, bunts, sqeeze plays, Hit and Runs and the likes. In Petco, where runners are at a premium you have to make sure your "productive" outs do not come back to bite you in the tukus. A word related to this: I haven't checked your lineups but if you have a big bat with a B Hit&Run rating behind a good OBPer with a * rating make sure the big bat is not trying to hit and run, I think Rolen and Casey are both Bs.
If you want to paste here your manager tendencies page we'll take a look at it. I'll go through your lineups later to see if I spot something.
However:
You have gone on a pretty good roll lately so I guess it's just best if you keep doing whatever you are doing, you can't argue with a 12-3 run :D 8)
I think my rant has gone on for too long now, will chime in later.
All best of luck.