I've noticed though that TK is more generous with status miles on some *A tickets (e.g. UA, SQ) than A3 and TK offers a 2-year requalification option (37,500 over 2 years or 25,000 over 1 year). But A3 tends to play nicer with LH group tickets evidently.

I'm looking to jump ship from Asiana to one of these so I've been studying both airlines' earn charts/qualification/requal requirements.