Patrick: By 53%, I assume you mean 53 percent grade. 53 percent grade is equivalent to only 23.85 degrees. I can tell you that Freefall at Smugg's is much steeper than that.
I have skied many of the trails mentioned in this thread, and to tell you the truth, I usually would not give skiing any of them a second thought. When I crested the top of Freefall and looked down it actually gave me pause.
We were at Mad River Glen and Smuggler's Notch last season about a week apart. You have mentioned Paradise. We then skied Paradise at MRG several times. I would tell you from my own unscientific observation that Freefall appeared steeper than Paradise.
Yes, I would probably agree the overall steepness of Freefall versus all of Paradise. Not sure however on which one has the steepest part?