ATC says " you are going to 20" probably because they saw aircraft visually going right downwind for 20 having been too high for landing on 02
And then the question arises is how they came to be too high to land a turbo prop on a mega long runway. I'm not familiar with the approach flown: I heard it was a VOR/DME. Why would that be so difficult to be Soooo high at visual time?