The lower part of the body, old style is disproportionate.
If so, it could be due to the horses appearing to be the same as used in the old sets. (To be honest, it would be preferable if Strelets came up with new horse sculpts as the combination of leg positions does not look natural in many cases but that's another story)
for me look like early Strelets style, quiet ridiculous comparing their new standard
Must admit I'm as baffled as zirrian by this. Here are a couple of examples of the old WW1 cavalry sets: