Although I scored it for a $100. Doing a side by side comparison it seems your Passage has all the same specs for half the retail price
The materials (poles and fabric) of the QDT2 are higher end even tho they weigh about the same; and setup is a little easier with the 1 piece hubbed poles on the same.
Everyone likes Big Agnes tents...also...I really like the look of the Nemo tents. Can't go wrong with REI on a product like this IMO, so easy to replace or whatever if any issues.