Beckett gets less drop and velocity on the curve than Buchholz, and some extra tail and sink on the sinker. The biggest difference is the changeup - Buchholz's is slow and straight, while Beckett's just looks like a sinker with some velocity taken off. Generic pitch results:
|GB Rate||FB Rate||LD Rate||PU Rate||HR/FB||wOBAcon|
Beckett struck out over 8 men per 9 innings last year despite lacking a legitimate swing-and-miss pitch (though the cutter is impressive adjusted for pitch type - the average cutter has a whiff rate of around 21%). The chart below shows Beckett's pitch selection last year in each count. Hitters see plenty of curveballs in strikeout situations:
Overall: he got burned once the ball was in play last year (high wOBAcon, HR/FB, and RV-xRV), but he has some quality stuff. His cutter, in particular, looks good. He can probably still be quite effective this year if he stays healthy and has some more luck.