>>1364849I mean this is part of it, however it's not as important when you're standing and sprinting, and then standing and coasting downhill. I can, and do rock anything, Small, Medium, Large, and XL. The largest bikes are more stable and confident feeling in the rough bits. And the smaller ones are way more agile and nimble in the slow speed twisty sections.
Road bikes, where you can seated and need to extend your legs to a specific and certain degree, cadence, etc....its so much more important to have the right Centimeter frame to your body. Same with stem length and bar angle. Your ideal mountain bike frame setup changes on every climb angle, descent, and how much standing sprinting and standing coasting you do.
Also my fiance hated the small frame Cannondale. That it was too small where I guess I just thousands of more hours of.riding under my.belt, and can adapt so much more easily.
Also the new seatposts that move adds to it all. I haven't ridden a bike with the saddle popper thing but that adds to the factor.
An oversized big long shred sled bike carves through turns differently than having something sized just ride. It's not optimal, but obviously guys spending thousands on rigs are doing it for a reason.