Weh.

[SuperWarioWorld]

I'm actually trying to downplay Wario's fat-guy character that came up in recent years and revert to his original appearances in the Wario Land series. There, he was fat, but not as comically fat as he is now, and his most recognizable trait was his strength and not his weight(Wario Land was even going to be called Super Strength Wario at one point).
I guess I could make Wario's run cycle resemble that of Wario Land 2 and 3. I feel like that had some degree of personality to it.
Also, in my avatar, Wario's arm has a single line of muscle detail... not exactly a great reference, if you're asking me.
As for DragonDePlatino...
I feel like removing the muscle detail on his shirt makes the forearm stick out like a sore thumb. I also feel like leaving the actual definition of the muscles up to interpretation is more of a stylistic choice than anything else.
The example you pointed to, Wario Land: Shake It!, omits a lot of detail and shading in most places, which isn't what I'm going for. It has a very simplistic, yet colorful look to it, with a hint of detail; I'm not necessarily looking for simplistic.
I'm probably just blabbering on about nothing right now.