Let's be real. A lot of QB's could look phenomenal playing behind the lines Bama and Clemson have and the time typically afforded to them.
Did you watch the game tonight?? While what Lawrence did as a true freshman is surely impressive, he rarely had pressure to contend with. As for Tua, the kid has yet to finish a game when the Tide have been challenged down to the wire. He's capable of some really accurate throws, but he also has shown the ability to make some bad mistakes when pressured.
In short, it's hard to know just how good either player is when they rarely face pressure. In the NFL, what separates the great QB's from all the rest is the ability to make plays under pressure. I'm not sure if Tua or Lawrence has proven they can do that. Anybody can throw and make plays from consistently clean pocket.
Haskins obviously is surrounded by a lot of talent at tOSU too. But his line was nowhere near as good as Bama and Clemson. He faced pressure a lot more. Even the games when tOSU struggled to score and move the ball, Haskins didn't make a ton of bad mistakes and put up some good numbers. While I have the same questions regarding elusiveness and making plays under pressure as those other QB's mentioned, I do like his accuracy and football IQ. He seems like a bright kid.