Tillman doesn't project anywhere near Porcello, he doesn't project to be any better than our Top 4 in the Jays rotation, he stinks, the Orioles rotation stinks, they have an awesome pen though.
As for the latter part I agree it's tough to say what we'll see out of Stroman as a sophomore in his first full season, same could be said for Tanaka and his wonky elbow. He does have a mild tear, and it's only going to get worst, if you're in a keeper, he's definitely worth holding onto, he's young and will return more than likely better than what we saw.(After the inevitable surgery)