There is literally 0 similarities between the two gifs other than Werdum getting knocked out. Werdum was the aggressor in the Stipe gif, while JDS came in with that crushing uppercut. Werdum was reacting, albeit poorly, but reacting nonetheless to JDS coming in, even trying to throw a counter, and hesitating, before ducking right into that uppercut. Against Stipe he's charging in trying to land and apply pressure, but Stipe clips him while moving backwards(not an easy thing to do) and puts his light out.
Werdum could have kept his left up against Stipe, but that wouldn't have made a difference where JDS was concerned, seeing as the uppercut would have split his guard anyway.
Just admit you were wrong and we can move on.