Tech fan here. Jett has a strong arm, but he's consistently struggled with accuracy throwing downfield and with reading defenses. He looked like a lost cause under Kliff, which says something considering that for all his failings, Kliff has always excelled at QB coaching. And Kliff was the guy who wanted him and brought him to Lubbock.I wouldn’t say Duffy can’t throw.
I think Tech's OC (David Yost) did a good job with Jett by simplifying the offense. He called tons of WR screens, which were effective and made Jett's numbers look much better, even if they aren't particularly fun to watch in action. Jett's capable of throwing some nice passes, but he misses a lot of throws and will throw INTs if he has to throw the ball into tight windows. He think he'd do pretty well if he could find a G5 team that needs a dual threat QB.