A3 doesn't fly to Norway or anywhere close. And to fly from OSL to AMS or HAM via FRA and ATH is a bit overkill... Apart from that A3 doesn't fly to any of those either...
I do fly TK sometimes and OZ has as advantage that the status is valid for 2 years. I do also fly quite a bit with UA these days (but not always booked directly via UA or booked on UA stock, so I'm not sure how that would have been with PQD).