There were definitely questions about Mahomes mechanics and some of his decision making in his draft year. He's a gunslinger who didn't play a safe game, much like Favre. His f***ed up mechanics though are why he's an awesome QB because he makes all of these crazy throws. All of the knocks on Mahomes ended up being because he was just super confident and took chances.
I think the difference here goes well beyond mechanics though.
Mahomes was a very gifted passer coming from an Air Raid offense… his last two seasons at TT he put the ball in the air over 1000 times and almost had 10k yards.
To put things in perspective, in Mahome’s last season at TT, he only fell about 20-25 att and about 150 yards short of what Willis had in his ENTIRE college career.
All in all, in college, Mahomes had more than double the att (1300+ vs 600+) and yards (11,000+ vs 5000+).
It’s quite a striking difference.
Willis is a runner with accuracy issues and plays in a first read offense - he doesn’t process quickly… these are the same red flags I’ve seen fail at the next level over and over again.