Inquiring minds want to know... what makes you think that? I think UA's sysmte cuts down on shenanigans, thoughts of shenanigans, last minute wait and see and gives more hope of upgrading traveling companions and others. Personally I prefer UA's (especially because of SWUs), but I know that's just a personal preference. If it wasn't for the direct flights (especially internationally) out of EWR, I would be over with UA.