Teams apparently think Warren's a top ten player, at least judging from mocks we're seeing from the media. I think that's too high for him, but his versatility is really nice.
Bowers was more of the explosive threat teams usually want in that top ten at TE. Think the last TE that went top ten who was similar to Warren was Hockenson and that didn't go too well. Generally it seems like top ten TEs disappoint too, btw. Can't recall the last one that came in and lived up to that, though maybe I just have a worthless memory nowadays.