Hey CC!

I was also wondering the same thing: How much until ARM is more powerful than x86 mobile chips?
And I just love your post because it reminded me of a graph I drew back in January 2010 (that's 14months ago!).
Shockingly it still seems accurate!
http://img21.imageshack.us/i/73554987.png/

It looks like the OMAP4440 is equivalent to the power of a Intel SU3500, which is a great solution for Windows7 netbooks/tablets.

What's even more shocking back then Cortex A9 had yet to surface in any device, and dual-core Atoms weren't even announced!

edit: I just remembered what those lines meant; it was illustrating the minimum level of performance needed to have a responsive Win7 experience, and the minimum level of battery life for Win7 netbooks/ultraportables/tablets. My insight freaked the daylights out of me!