MTW is a different engine. The cavalry charge is much more effective there. So, just porting the STW data to SamWars would make very strong cavalry and render everything else useless.

STW WE, which stats 1.03 are made for, is yet again different from STW. Differences: STW WE has a faster gamespeed (iirc), introduced Kensai, Battlefield Ninja, muskets can not fire in rain (which was not intended afaik), has weapon and armour upgrades (and wrongly priced too), 3 unitspeeds instead of two.

While the 1.03 stats were focussed on MP, a couple of compromises had to be made to compensate for hardcoded gamefeatures (not possible to get rid of Kensai for example).

SamWars is not a simple port of STW 1.12 stats either.