If you're talking about the level 80 R9 I beg to differ, DS. The level 80 R9 keeps stride with the R11. I've seen it firsthand in a Legend AS match. My opp had the R11 and I was hitting the R9. No more than 2-3 yards ever separated us in distance the entire match and it was balanced for who got further. It got to the point where I commented that I wasn't seeing a big difference in the drivers and he agreed.
What I do find fun to do with the R11, and this is probably why you get the good distance, is to play with the wind. Aim way left and miss late in a L to R wind to get the ball flying. That kind of stuff. The higher loft reacts to wind help and you get some serious yardage. I wouldn't say do this regularly but in the right conditions you could see some stuff!