I did a somewhat objective test yesterday to prove I'm not completely crazy. After a half hour drive averaging 45 mph, fan on high, re-circulate, Lo, I was still pretty darn warm with an outside air temp of 86 degrees, sunny, PA humidity. So I ran in the house, grabbed my dual probe grill/kitchen thermometer, and took a trip around the block. I measured the driver's side vents, half the time in re-circulate mode, the other half in fresh air mode, in that order.
The left and center vents were consistently 5 degrees different, with the driver's center vent being 5 degrees warmer than the left. In re-circulation mode, the lowest I got was 53 on the left and 58 on the right. In fresh air mode, I was at 58 left, and 63 center. I did not bother with the passenger vents because 1, I was by myself, and 2, that isn't the air that blows on me all the time. I will say that the passenger air FEELS cooler than the driver side vents, but I did not measure this.
Again, this was after a half hour of driving around with everything at full blast. And I don't know about the rest of you, but I hate keeping re-circulate on for too long, as the air starts to feel stale. Also, I noticed in the manual that Ram even suggests NOT running in re-circulation mode for extended periods of time.