actually your unit looks definitely more photo-realistic, and the model is 100% times better....makes mine look more "cartoonish"
the thing is myth is a game, and not a very high res game
so the more photorealistic your unit looks, the more it might look weird "in game"
not because photorealistic is bad, but because of the camera angle of myth... the unit needs to "blend" with the mesh...and the mesh is basically a photoshop texture and not something photo-realistic...
to make it blend better I discovered this 3 things:
I add a lot of texture to clothes and everything, so it's not "clean" looking
all textures specially clothes have lots of "noise", so it doesn't look flat
flat looks bad in myth, to my perspective
then after you render your unit you should lower the brighten at least -3 and add contrast +5 ( or test it)...as units come out too brighten from poser, if not check your unit...it looks like lit by a 12k fresnell light
then what I do to make it "stand out" is to use the filter "sharpen" in photoshop
that definitely brings the noise out of the texture "out".
and voila.
it doesn't look pale or boring anymore.
still you picked the best looking unit, the german I did kinda sucks...the free models I got my hands on where not the best out there

....