Courtesy of Slowplay

At a current narrowbody fleet count of 497 AMR can operate the following RJ fleet in 2016:

35% up to 65 seaters (CRJ-700 in 2 class) = 174
40% up to 79 seaters (CRJ-900,EMB175,MRJ90) = 199

That's a total of 373 large RJ's allowed. They also get 10% 50 seat turboprops for total outsourcing at current fleet size of 423 aircraft.

Now what if the grow? If they grow the same size as Delta (723) they would be allowed 253 65 seaters and 289 79 seaters plus an additional 72 turboprops.

So which is better?

Up to 289 79 seaters or 223 76 seaters?
Up to 253 CRJ-700 or 102 CRJ-700/EMB-170?

Oh, did you happen to notice their Alaska code sharing is unrestricted now...