Just from research on him Mariota is pretty good
Here are Mariotta's stats for the year: 7 games, 132 of 188 (70.2%) for 1957 yards, 19 TD, and 0 INTs. He doesn't have the highest yards or TDs, but he does have the highest QB rating in all of college football. Every game this year he has thrown at least 2 TD passes.For his 3 year career, he has 8299 yards, 82 TDs, and 10 INTs. Very impressive, even in that high speed Oregon offense.
Again looking over body of work
Here's my opinion
The Good:-Very good athlete, runs well, very fast.-Makes good cuts, runs hard.-Makes good reads, can make guys miss and take a hit-Can create when the pocket breaks down-Strong enough arm, can get the ball down the field-Quick release, gets the ball out on screen plays quickly and effectively-Made some pretty good throws into traffic and over linebackers-Extremely impressive playmaker - made a few plays that made me say "wow!" out loud-Doesn't always scramble to run, will still try to find guys-Doesn't seem to take too many big shotsThe Bad:-Seems to get happy feet when pocket starts to break down-Will run around rather than climb pocket to make throws-Threw some players out of position even when they were wide open-Footwork definitely could use some work. Took a lot of missteps and hops around rather than being deliberate.-Everything is out of the gun. No idea how he'll fare at 5 and 7 step drops from under center-Tall, but a bit narrow - More RGIII than Kaepernick. Concerned with longevity in pro'sOther Notes:-System definitely helps him. Many of his best plays were to wide open guys. Not to say that's a bad thing, just doesn't tell us much on how he is throwing into traffic.-Often saved by skilled teammates - several teammates made circus catches to save the play when they were wide open or guys just making athletic plays to turn nothing into something-Doesn't always look like his eyes are down the field but somehow finds people late in the plays