Seriously...Go book a flight on American, pick a 737 or MD-80. Then come back here and try to look me in the keyboard (with a straight face) and tell me that there isn't a lot more legroom.
Well, it won't be anytime soon as American doesn't fly out of Anchorage to anywhere I want to go. Plus they cost more to go where I don't want to go. But, I'll take your word for it. If that additional inch or two makes it less like a cattle car for you, great.
For the record: I'm 6'2" and never feel scrunched on Alaska Airlines.