Expectations are down to the way the Dodgers have just wrecked their playoff opponents on the NL side.
That said the Jays' offense is absolutely potent from #1-9. One of the thing that killed the M's this series (aside from standard Mariners failures with runners in scoring position) was that the pitchers were just worn out inning after inning by a lineup with no easy outs. It was brutal.
Dodgers pitching has been lights out in the postseason, but they aren't perfect and were much more average during the regular season. If the Blue Jays can keep that offensive pressure up on a well-rested LA staff, they've got a chance. Big if though.