Blake Bortles = Blaine Gabbert
Na. Only thing similar is that they are close in size and both solid athletes.
The biggest difference between Bortles and Gabbert is that Gabbert was scared and always ways. He's decent if there is no pressure, but that rarely happens. But when there was pressure, he crabwalks backwards and makes a horrible decision and throw. He was scared to get hit.
Bortles isn't. In fact, he kinda likes contact. He isn't afraid to sit in the pocket and take a hit. And also has the size and physicality to shrub off a defender, extend the play and make the throw.
Bridgewater is the safest QB to take in the draft. But his ceiling isn't high at all. I think Bortles is a little more risky than Bridgewater, but not by much. And has a much higher ceiling. Bridgewater will be an average nfl QB. Never will be a really good or great QB in the nfl.
Manziel is the wild card. He could be great, he could be horrible. I have no idea.