14b's have hit 12s
One person that stands out in my mind is "Arctic TSI". Search that in google for the video. Even though it's a 1g, that's still damn good. IIRC, he ran something like a 12.1. I gotta find the video.
The 14b can never be compared to a t25, since it is so much better in every way. I almost wish something would happen to my t25 so I have an excuse to upgrade, but at the same time, I have no money lol.