well, I have to agree, the colours youve used are pretty out of style. alex's picture you linked to was his own style, he wasnt trying to match another style so you dont really have much of a point

if you just compare the colours to the ken in your avatar, the red and skin tones are quite different. and I think the reason you couldnt get the mustache looking right is because you werent using black, and you werent using black because it looked too harsh against the other colours right?
also marios hat doesnt look much like his hat.. it looks more like a knockoff cap

I think your anatomy is alright, except for hat anatomy

but your main issue is definetly the colours
best of luck, I look forward to seeing the finished result