Although I haven't flown UA in C or F (international) in 1.5 years, based on my assessment of the current CX J product, your comments seem a bit out there to me.

In particular, I find J food on CX to be really bad (not just with respect to other biz products).

As for amenity kits, assuming the CX version costs $8 v. $4 for UA, the $4 premium isn't much in the grand scheme.

I definitely like CX's blankets, but we're talking Marriott v. Hampton Inn.

As far as F is concerned, I'm quite sure CX is much better than UA (it's really great).

In short, my sense is that CX F is much, much, much better than CX J, whereas the difference between F and C on UA is only marginal.

Hopefully, I'll be in a better position to complete this comparison after I try UA again next week (though I'm still contemplating going with JL; part of me wants to check out their suites product while it still exists).