OU is not better for QB development, just because a school has back to back heisman winners at QB, does not mean that they have or will have a good track record for developing QBs. The main reason why Josh Rosen was labeled the “most NFL ready” QB last draft and not Baker Mayfield, is because of the Pro-style offense he ran while at UCLA, more drop backs, intermediate passing etc etc. You’re right that the NFL doesn’t have one particular conference or school to funnel regularly, but if there’s one conference where your body of work will be question, where scouts will have to watch EXTRA film...it’s the big12, again because they have a reputation of lighting it up in college and flaming out. Now Pat Mahomes is the exception, like I said to another poster, Pat Mahomes and even some aspects of Baker Mayfield are once in a generation, I believe those two would light it up no matter what conference they play in or what team they’re drafted by. Pat Mahomes Arm is the best since probably Brett Farve, but again they’re the exception not the consensus. If you want to see how ridiculously inflated big12 numbers tend to be, just look at the combined numbers for last year top 4 passing leaders and this years passing leaders from the big 12
2017 top 4 Big12 passing leaders combined for
16,984 passing yards, 143 TDs, 37 INTs
2018 top 4 Big12 passing leaders combined for
14,682 passing yards, 130 TDs, 31 INTs
and if you combined last year top 4 with this year top 4 that’s 31,666 passing yards, 273 TDs, 68 interceptions split between 7 players (Will Grier 2x)
That’s more than some conferences combined in the last 5 years. So if Fields goes to OU, he’ll have insane statistical numbers but unless he’s Pat Mahomes or Baker Mayfield level of talent, he won’t be developed as good as he would if he played in a pro-style system. If I’m fields I’d rather be Desuan Watson, than to be like Mason Rudolph.