There's more to it than just that. Wing loading is what you are really looking for. Plus, read post #378 in the 50cc Yak thread in the Aerotech support forum (in Giant scale forum). That guy did actual measurements and only got 1330 sq.in. I don't know for sure, but I think the QQ Yak wing area is more accurate.
Now, take the actual weights of what people's planes are coming in at. Again, while Aerotech has and advertised weight of 16.5-17 pounds, most of them are coming in at 17.5-19 pounds, while the QQ's are easily built at 16 pounds or less.
For the sake of truer comparison, lets say you can get an Aerotech down to 17.5 pounds and it actually has 1410 sq.in. Your wing loading is 28.6 ounces. Then take the QQ at 16 pounds and it's 1330 sq.in and you get a 27.7 ounce wingloading. They are relatively the same size, so Reynold's numbers don't matter, and the QQ appears to be the winner, by an ounce in my comparison, but I was being generous to the Aerotech's specs...
In my opinion, the QQ Yak is a FAR superior plane, in both flight and quality. The cheesy fiberglass canopy of the Aerotech is enough to keep me from buying one...