The run differential isn't as relevant as you claim considering the jays are running out Goins, Coughlan, Carerra, Maile, and Barney as regulars in place of JD, Tulo, Martin, and Pearce. Throw in the spot starts from Lawrence, Latos and Bolinger and it becomes quite clear that trying to measure a Jays lineup with run differential really has no merit. It might be more accurate to articulate that the Bisons run differential against the rest of the MLB is poor.