Yes.
You cannot judge wand soley on that.The issues he had when making the jump over cant be blamed on that.
He had been knocked out twice by Crocop and Hendo in back to back fights in PRIDE. Took a beating against chuck in a fight where he elected not to throw kicks for whatever reason.Beat up jardine, Then was koed by rampage. I dunno about you but your chin cannot be the same after those 3 out cold knock outs.
He did look smaller in UFC,but then he just cut to MW. However I think more than anything the injuries age and cracked chin took their toll. We still saw flashes of his old homicidal aggression in a few fights.
People always show the wandy gif where he fought saku the 2nd time,where he is CLEARLY pumped up on roids,but seriously,he didnt always look like that. That was like Overeem in the Brock fight. You cant always be that humongously big hahaha