-All 3 have excellent tools with good size/mobility, but I'll take Bender by a hair. Qi is the longest, Maker is the best leaper, Bender is the most fluid/coordinated. I like Bender best because Qi is worrisomely skinny at age 20, and Maker has bad hands, which can be very problematic for a big man.
-Bender is the best shooter of the three. Not clear if Maker and Qi have range to the NBA 3pt line.
-Biggest difference is in terms of feel for the game. Bender clearly has great feel, at a young age. Qi seems to have decent feel, but it's hard to tell in the super-weak CBA, and he's also the oldest. Maker clearly has terrible feel, doesn't know how to play basketball at all. But he's pretty young, so he has time to catch up.
Overall, I'd say a small edge for Bender in tools, a medium edge in shooting and a big edge in feel add up to a gigantic gap overall between Bender and Qi/Maker. I could see an argument for Maker over Qi, but I'd take Qi unless Maker has a monster workout.