Stock for stock, YZ450F craps all over WR450F for offroad bike. Period. MX suspension inferior??? Not to the overly soft WR suspension. Valving is way too soft on the WR's, even for the weight range it is intended for. Suspension should be on the list to do on ANY bike, its just way less priorty on a YZ!!! Not a big difference in power? You're kidding right? "Stock for stock" I'm talkin free mods of course. The trottle stop alone is night and day. The lean jetting to achieve a green sticker is also a big anchor. I am comparing a free mod, properly jetted WR to a YZ. Not a plugged up stocker I think there are alot of poorly moded/tuned WR's out there. Your WR should hang with ANY 450 that is near stock. If it's not, something else is wrong.