TATL, the food on sCO is indeed better than on sUA. However, I've always found sUA's TPAC food to be much better than their TATL catering and on par with sCO's, so that's a half point in favor of sCO.

Wine on sCO is unimpressive at best. On sUA, average to sometimes very good, and here, the service difference is notable. From the nuts through dessert, the sUA FAs keep your glass filled without complaint. I often have to say "no more." That has never happened on sCO. You constantly have to ask. point for sUA.

Water - I like a glass of water that is topped off throughout the flight without asking, not a plastic bottle so the FAs can disappear. point for sUA

intangibles. On sUA, the FAs generally treat the 1Ks as a valuable entity. You can approach them when they aren't working, and they like to talk. On sCO, in keeping with the "all elites are equal" they don't care that you fly 100K on their airline. The sCO FAs can be just as pleasant - that is, unless, you interrupt their sudoku.