If Cooks ability = a tall receivers ability, you take the tall receiver
If Cooks ability, on a scale of 1-10 is a 9 and a tall receivers an 8.5. I would take Cooks, some would take the tall receiver
If Cooks ability is 9 and the tall receiver's is notably lower you DO NOT take the tall receiver just because he's tall.
I like Matthews and OBJ over Cooks but that's because I think they are equally talented.
We don't need a tall receiver. We need the best receiver available, if he happens to be tall, great. If it happens to be Cooks, take him