Not exactly. His wOBA and wRC+ in Colorado last year were .349 and 104, respectively. In Toronto, those numbers dipped significantly to .298 and 86. SSS aside, neither output is on par with his career norms, but I fully expect an offensive turnaround this season to something more on par with his career .377 wOBA and 123 wRC+. Actually, I'm expecting even better offensive numbers.
At least his defense is still fantastic, so even if he's a league average bat moving forward (which I've explicitly stated above is not what I expect) he'll still likely put up close to 3 WAR.
And yes, I realize I'm preaching to the choir here, as you've stated you believe Tulo will, in fact, bounce back this season. I suppose this is more intended as a general response, but I'm using your post as a catalyst for my argument.