Exactly. I get a kick out of these guys who say their phone runs hotter with one radio than another, or they get a quicker gps fix, or more satellites, or they have more luck with the ladies with the Telus radio than the Sprint one. There are so many factors, from atmospheric/weather conditions, to network congestion, cellular coverage, etc... Those radios are just a tiny variable in how your phone is performing.
As I said in an earlier post, Conflipper's updated rom is now available, and I highly suggest you flash it if you're in the market for a custom Alltel Rom. Look here:
http://forum.ppcgeeks.com/showthread.php?t=50208
and don't forget to thank the man that made it all possible, CONFLIPPER.