It's not as crazy as you make it sound.
Per Draftexpress, they are almost identical in size and age. Coty has more weight and is stronger:
Coty Clarke -> HT 6' 6" WT 239 Wing 7' 1" Standing 8' 8.5" Max Vert 31.5 Age 23 (born '92)
Crabbe -> HT 6' 6.25" WT 197 Wing 6' 11.25" Standing 8' 7.5" Max Vert 36.0 Age 24 (born '92)
And Coty has much better stats at comparable skill levels:
View attachment 9247
Then here is
Allen's
View attachment 9248
So based on the stats, Coty is a better 3pt shooter, better rebounded, averages more steals, generally has a higher TS%, and has a higher WS/40. They are about the same in Assists, blocks, and TOs. A lot of times the difference between players is just getting the right opportunity.