[zobzu]

actually it seems to say FF has 87% support, Chrome 84% support, Safari 83% support, so the parent comment looks correct.

[nickpresta]

http://caniuse.com/#compare=firefox+21,chrome+27

I'm not sure how they're calculating 87% -- do unknowns count towards supported? It looks like, from that list, that Chrome supports more.

[Tloewald]

You're comparing the FF "future" release which is not reasonable. There are equivalent versions of Safari and, I suspect, Chrome.