He's only 20. Jaylen is significantly more athletic than Crowder is or ever was. Crowder's a career 34% 3 point shooter, Jaylen is shooting 33% this season. He's likely going to end up being significantly better at creating his own shot than Crowder is, who pretty much can't. Crowder throughout his career, has been a good, not great defender. Jaylen gets lost a lot defensively, but again he's only 20, I expect him to get wiser with more experience.
I MUCH RATHER HAVE CROWDER