It's crowded in Tampa and you got a major alpha target guy in Evans. DJAX, Evans and the two TE's to me is a lot. Where does Godwin fit in 2018? Do any of those 3 WR's play in the slot over Humphries? Will Tampa run a lot more two TE offenses then 3 WR packages? I just don't see where he fits in for any kind of consistent role so long as DJAX and Evans are healthy. He'll likely eat into some DJAX snaps next year but that's just going to be work against both of them. 2019 he likely can claim ownership of that job next to Evans but he'll still be the #2WR to a high target Evans in an offense likely to heavily use the TE.
Here is what I don't think people realize. Golladay is one of the 3 starting WR's for the Lions. He's not a backup. His hamstring held him back a lot last season but he closed the final 4 games of the season outsnapping Golden Tate by a little each game. And I'd add that everyone was healthy, Golladay was not forced into action. Tate runs out of the slot 90% of the time, Golladay and Marvin Jones are the two starting outside WR's for the Lions. Now they may yet add someone but you've now removed Ebron and his 80+ targets.
So for me in 2018 I got starting WR in Golladay in an offense where the high target guy last year was 120 and they just lost a major 80+ target guy vs parttime/backup WR in an offense where the leading target guy was 136 targets but he missed a game so would have prorated to 145 targets and they've lost no one. In 2018 Golladay looks to be head and shoulders in the best situation to carve out a big piece of pie.
Then look into 2019. DJAX likely gone in Tampa but you still got Evans, the two TE's and Humphries running out of the slot. Meanwhile in Detroit the high target guy, Tate, sees his contract run out in 2018 and while that likely won't alter Golladay's snap count it will his usage.
To me they are comparable talents in vastly different situations.