If Pedro's healthy, I like the Mets, but that's a big if.
The Yankee rotation has been pretty weak at times this year, so I wouldn't go so far as to say they're "unbeatable". Really, if the last few years have proved anything, it's that any playoff that gets hot can win it. Top to bottom, the Giants, Yankees and Astros were better in the regular season than the Angels, Marlins and White Sox, respectively.