Pineiro, prior to last year, was basically the equivalent of the others mentioned in this thread. He's a league average pitcher who had his best year, by a large margin, in his contract year with Dave Duncan as his pitching coach. There are so many red flags there, not to mention that he's 32, that I would not put him ahead of the kinds of guys we actually could use.
We need pitchers who put up IP until the young guys have been built up enough to do so. Guys like Jon Garland are exactly what we need. Lots of innings, average to good pitching, and injury free.
And, for those who actually think W/L matter with starting pitchers, have you watched a game in the last 40 years? There was a time when starters routinely finished their games. During THAT time W/L was a relevant stat for starters because they played a much bigger role in the result. The modern game has much more bullpen use. Add in things like offensive production, defensive play, etc. and to say W/L is a primary way to judge a starting pitcher means you are not worthy of debate.