I’ll say it again. There is a reason he went to Tulane. Big arm or not, that doesn’t mean you can play quarterback at an elite level, with grown ass men chasing you wanting to rip off your head. He isn’t an NFL QB. He isn’t even a power 5 QB.
What college a kid goes to matters little. Joe Flacco, Steve McNair, Tony Romo, Big Ben, Derek Carr and Blake Bortles are all recent examples of guys who didn't play for 'elite' schools or even P5 schools and still found a way to do very well in the NFL.