Expectations for the Tigers seem to be suffering from "if everything goes right" syndrome. I doubt that the offense will be the juggernaught it's being predicted to be. I'm not worried that much about Verlander, he has shown he can handle the load (at least for now), but here are some issues I have with the 2008 Tigers:

-Ordonez is probably going to have his AVG drop at least 50 points next year, there's no reason to expect the MVP caliber production that article claims.
-Polanco can't be entirely discounted because he did the same thing just two years ago but it's a better than even chance that his AVG drops some as well, though not to the degree Ordonez's will.
-Jacque Jones isn't good.
-Neither is Pudge Rodriguez these days.
-Renteria is another guy with an unusually high BABIP last year and he isn't what he once was defensively.
-Granderson is an excellent player but he isn't young, last season may well have been a career year for him. Even if it's not there isn't any particular reason to think that he will continue to improve.
-Sheffield's health and production level are both questionable, his days of posting an OPS of .900 or better are certainly gone.
-Count me as being very skeptical that getting Willis off the Marlins means that he will suddenly live up to his generally oversized reputation, especially leaving from the weaker league.
-Robertson is ok but his 2006 stands out as a major outlier from his otherwise unremarkable career.
-Rogers is old and a health risk.
-Bonderman has had five years to live up to expectations and has failed completely, his tendency to significantly underperform his FIP is beyond the point of being bad luck and well into the realm of a real flaw.
-The bullpen may suck.
-The defense, the real reason the 2006 pitching staff looked so great, isn't as good any more. They have some good spots still but also some bad ones.

So no, I'm not a believer in the Tigers being an uber-team. They're probably very good, the AL Central is a very close race at this point between them and Cleveland, but they have flaws and potential pitfalls all over the place. Most teams do of course, that's the way things are, but I feel too many people are ignoring the ones on the Tigers.