While I don't completely agree with parnel, I do think that the GTAA was pretty sleazy with this whole business. AC (and their pax) have put up with crappy, old T1/2 for the last number of years. Now, WS was going to get gates in T-NEW and AC domestic ops would have to be split? What a joke. AC took T1/2 so that they would get T-NEW first.
The GTAA shouldn't have given any of those gates to WS to begin. Besides, WS is better off (as a still relatively small operator at Pearson) to keep both their domestic and transborder ops in T3 (which is still a great terminal).