i think the Raptors have a legit shot to beat them. not saying it's likely but i don't think its that far fetched. maybe a 25% shot, something like that
my favorite basic way to look at teams is to look at the offensive and defensive team efficiency and look for the teams with the widest spreads.
Currently Toronto is 2nd in offensive efficiency, but the defensive side is slacking. If ibaka meshes well that could bump that side up.
One caveat is that Cleveland (Lebron) kicks it into a different gear in playoffs so their data is a lot different in playoffs than in regular seasons... especially defensively.
you can see the team spreads here
http://www.espn.com/nba/hollinger/teamstats