"Not really, no. Anything under about 25-50 will feel instantaneous. Between 50-100 you're looking at something that doesn't consciously register as 'slow', yet feels vaguely sluggish - especially when it comes to responding to taps on a screen."

Not according to empirical findings: http://www.nngroup.com/articles/response-times-3-important-l...

Funny that you mention BB10; I used to work at RIM (a handful of years ago), and developer relations were disseminating documents that said application developers should make apps respond in less than 150ms to give the illusion of instantaneousness.

Mind you, I'm not saying YOU can't perceive the difference between 100ms and 25ms, but that in the general populace, the limit of perception is around 100ms.