I guess it's just me but I can't quite wrap my head around it. I could understand the jump in processing power between the 3Gs and the 4 as there was still some noticeable latency in the 3Gs, but I haven't been able to do anything to the 4 to bog it down.
I dunno. Just me I guess, not very up to speed on phone components.
i.e. Video stabilization in software, instagram, Siri, Yelp monocle.... Real time morphing, and have you seen the crazy music apps, let alone iMovie or garageband.