<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Wiggums:
Being Premier Executive, I get to enjoy RCC lounges on international tickets. AA frequent flyers at any level do not.</font>
Not true. You get lounge access on int'l itinieraries, including connecting flights, once you hit Platinum, the equivalent to 1P.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">UA's mileage runs are much better than AA's - hands down - due to plentiful Asian and European routes. Not to mention they're consistently cheaper on UA than AA.</font>
I don't think this can be proven. Mileage run opportunities exist for all carriers, and I don't think the UA runs are superior to AA or CO or DL runs.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Award trips require lower mileage on UA than AA.</font>
Depends on the destination, and on AA you can get premium class on connecting flights on a partner carrier without using an alliance award.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Harder to get to Premier Executive on UA than AA (Reason: AA has way too many million milers because they factor in bonus miles as well - effectively watering it down).</font>
How does the fact that AA has more elite impact how hard it is to get the requisite miles/segments?
It doesn't.
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There are legitimate reasons to prefer UA over AA, but we don't really need made-up reasons based on misinformation.