Depends on the situation. For one, I do not buy for a second that Pujols is 25. I don't necessarily think he's as old as, say, Julio Franco. However, I could definitely buy him being in his late 20s or around 30 (A-Rod's age). Secondly, I think people are jusitified in their arguments regarding positional scarcity. If we're talking straight up defense, I'd take A-Rod over Pujols. Thirdly, the stats are quite telling. A-Rod is the better fantasy player because he plays a positional without many good offensive players as compared to 1B. However...I think I would take Pujols over A-Rod if I were running a major league club. After seeing what's happened to A-Rod with the Yankees, I just can't place such a high value on him. He's not likable, he's not a leader, and he is the last guy you want at the plate in pressure situations. Yeah, I know RISP fluctuates and it's hard to assess whether or not clutch hitting actually exists...but A-Rod just isn't a guy I'd want at the plate in the bottom of the ninth, two outs, two men on, and my team down by 2. He's the first guy I'd want to have at the plate if my team were up by 4, though. Pujols, on the other hand, is quite the opposite. He's a back-breaker in every sense of the word. How many heart-breaking big hits has he had so far in his short career? Every time he comes to the plate in a situation where he could swing the momentum of the game, you can just feel the air starting to get sucked out of the stadium. Plus, while he doesn't quite stack up to A-Rod in terms of stats and defense, he is not a slouch by any stretch of the word.