I would have loved to make that comparison but I've only flown QF in F and in their older J (and domestics) so I'll have to pass on that one.

I think "by the numbers" AA's new J-seat has about as small an incline as just about any of 'em (that have an incline, of course.) I hate that feeling of practically having to use the metal "step" to constantly boost oneself back up the "slide" if ya' know what I mean-- and, in my limited experience today, I didn't get that sensation at all. ^