Obviously.

1400W at a 210 rider weight...unless fb is an elite track cyclist this is a severely short timed power output. Personally I have some nice sprints in the 1395-1400W range at the track at 210lbs...they are measured in lasp/seconds not climbs....but I have never found my amazing 1400W output to be a factor that flexes my wheel while climbing. If I have a wheel that's flexing under me while climbing it's because it has too few spokes and my ass is too fat.

FB....if you're climbing more than a block or two at power and you're averaging more than 300-350W then kudos to you. Now if you're touching your brake pads on a kinlin build at a sustained 300-350W at 210lbs I am going to guess you're on something ridiculous like a 20 spoke rear, have your brakes set too close, or have something wrong with the build/wheel. Try tightening that skewer to something higher than "barely on" and see if that makes a difference for you as well.