I think it is contextual.....there is a growing swell of "bring MLB back to Montreal" types....so any MLB games played there during this time (until it happens or it is ruled out) will do very well at the gate. After last year's two games drew almost 100k....I think they plan to go back every year.
It certainly makes sense to host pre-season games elsewhere. Personally, if I were the Jays I'd step it up and host a regular season weekday series vs Tampa or somebody in Montreal, and a weekday series vs Seattle or Oakland in Vancouver. These are two series that would be lucky to draw over 20K per game in Toronto, but I could almost guarantee they'd be nearly sold out at the Big O and BC Place, respectively. It would go a long way to proving the viability of those markets to the MLB, it would grow the Jays brand across Canada, and Rogers would make way more money from those games in those locations than they would at the Rogers Centre.