At SWA, AT, & JB to name a few, left seats are filled with many pilots who do not have a college degree. It has nothing to do with flying an airplane. Let’s go with a better standard, you must write an ACT of 27 or an SAT of 1250 to get your ATP. That would be better test of intelligence than a college degree.
Are you kidding me? That's your threshold of hiring? I've had a total geek in the right seat who graduated from ER. Very smart guy, but had very poor CRM skills and was a poor decision maker with poor command authority. He did eventually upgrade (50 hours of OE) and has since had 3 "incidents" with the company he presently works for. I'll take a "Bob Hoover" GA pilot type (who would never be hired based on your qualifications) with good people and stick and rudder skills over a exam taker any day.
Intelligence is more than a grade, my friend.