OK, so do you remember the Alabama team with Henry Ruggs II? I like Waddle, but he's not significantly bigger than Ruggs. You can claim Waddle is the more polished WR, but at the very least I think that's an open debate, because this time last year Ruggs showed his versatility at the Combine and elsewhere and made a believer of most scouts. At the end of the day nobody doubts the elite speed of either Ruggs or Waddle. But, everyone questions being in an all-star team at Alabama and the completely different physicality of CB press coverage in the NFL compared to the soft touch college kids. Not saying Ruggs will not prove to be good, but he was chosen over Justin Jefferson, Jerry Jeudy, and a bunch of better big WR's in the 2nd round like Chase Claypool and Tee Higgins. Size matters far more in the NFL than it does in the collegiate ranks. Waddle will likely succeed and be great ... but there are very low success rate for guys like Tyreek Hill.
Mark Duper was a different era, when DB's were allowed to clobber WR's all the way down the field, so if you didn't have elite accelleration and speed, you never generated any separation at all. Today's NFL is 1,000% easier for QB's and WR's because the DB's are only allowed to touch the WR in a small window at the line of scrimmage. The bigger WR's simply push through that and are quickly into their routes in an area where the DB's get called for pass interference today for doing anything even remotely close to what they could legally do in Duper's era. So that momentary delay at the line of scrimmage throws the WR off his timing route, and those precision fast throw short passing offenses everyone runs today don't work and the WR doesn't do great.
Also, it's worth noting that Tyreek Hills routes are usually longer, and Patrick Mahomes is exceptional at buying time and making off-platform throws so he can extend the play until Hill eventually gets into open space in the secondary. While our hope is that one day Tua will be able to do that and our OL will be able to give him time to do that ... we're certainly not there yet, and very few NFL clubs are at that point. Maybe Seattle because Wilson is so good at it, maybe where ever Deshaun Watson lands, a couple others maybe, but not the Dolphins. So if he comes here, Waddle will need to win vs. press coverage, because we're not built to buy him time. Hill was cut off in the Super Bowl because Mahomes was running for his life. And if KC with a great OL and QB situation can't make it work, I don't have much hope for us. OL has not really been our strength since Shula retired.