He wouldn't have been available tonight, so the suspension is really 2 games, and only one of those is V/ the Yanks... Decent strategy, if they thought he'd lose the appeal.
Smoak is inarguably a more valuable player. Cola had a hot streak, and that's awesome, but he's cooled off, and his D is just painful.
fWAR is 0.0 v 0.4 and Cola's had ~70 more PA's than Smoak has.
Personally, I'm of the belief that 100% of players in the MLB use anything and everything they can get away with. I don't think the Jays are crossing any more lines than any other team, but I don't think they're pure and innocent either.