The biggest part on the cornice is HUUUGGGEEEE. Here's a picture of the easy entrace (given you don't hit the wall on either side)
It starts out there and goes to well over 30' on the right side, and that's only if you jump turn off it somehow. In reality, you'd be going 40'+ if you hit the far right with any speed.
And as far as Corbet's being the sickest line, I don't think so. There's the drop in, and then nothing else for the rest of the run. Check out Once Is Enough or Igneous Rocks on Cody Peak and then you'll see some good lines worthy of more recognition. I could even show you 20-30 lines at Bridger Bowl that are harder and a lot more technical than Corbet's. But it's still a really cool run to do.