There was much discussion on these boards in 02 and 03, if I recall correctly, about program options that are built in to the TSN online version of this game. The online version, as I understand it, is based on the SOM computer version, and many (if not all) of the advanced features provided for in that game are/were available in the online game. If memory serves, TSN makes decisions about which features to enable for their online game, so there is some discretion involved on their part.
As I remember, the discussions of prior years were centered around homerun 'normalization' (Bonds) and the super-reliever problem, and TSN changed settings based on input/complaints from users. This being the case, I don't think that the idea of TSN making other adjustments to create parity is that far into 'left field.' After all, the SOM online game was not very profitable for TSN in the first few years, and Larry and Bernie would often complain about it.
Lucky or others will probably have more information on the game structure, as I don't run sims on the computer version. They will also probably recall the prior discussions in greater detail. 8)