Santander is physically limited out there, especially in regards to speed, but he takes good routes, catches everything, and has a solid arm.
Cowser is obviously a lot more tooled up, but I was disappointed in his routes and his throwing arm- not the strength, that was better than I thought tbh, but his mechanics in receiving and releasing the ball led to several bad/inaccurate throws.
I know you've probably seen him more than any of us on this board, and I respect your opinion. I have little doubt in the long run it will turn out to be correct. But, as of last year, I felt more comfortable with Santander in RF than Cowser, and I'd like to see improvement from Cowser before I changed my opinion.