WAR is a cumulative stat, is the point gob is making. So when you play less than half a season, it's going to be lower than usual. Plus when he played he wasn't always 100%.
I don't know what PED's add to a stat line. It's hard to quantify. Plus there are all sorts of different PED's. There many varieties of steroids, which all do different things, let alone HGH and whatever people like Victor Conte are concocting in labs as we speak. Bonds, Sosa, McGwire, Luis Gonzales, they were clearly taking bodybuilder PED's, based on obvious body changes, increased power, etc. You don't see much of that anymore, if at all, because it's a giant red flag these days to walk into spring training looking like a professional wrestler. But I would safely say that those types of PED's add significantly to a stat line, sure. We have some evidence to point to that, all of those guys above saw stat jumps, all saw them late in their careers when the stat line should have went the other direction.
Sprinters take things that give them burst, cyclists look for drugs that increase stamina, somebody like Roger Clemens probably took for recovery & stamina which allowed him to pitch at a high level well into his 40's. Clemens didn't really get any better, he was just able to stay at a high level longer.
We don't know what Braun was taking, we just know he failed a test for raised testosterone. Maybe a steroid, maybe HGH, but to my knowledge (and correct me if i'm wrong) the substance was never identified and/or reported.
If I were a betting man (I am!), i'd say Braun has been taking his entire career. I base that on the PED culture at Miami, as there is a clear & obvious pattern to ex-Miami U baseball players (just look at the Biogenesis list). He's been beating tests his whole life, and i'm not convinced he'll stop. We've seen with other players like ARod, they can't/won't stop. Like Tailback said, it becomes a mental dependency at some point. Plus, these guys are top level athletes and not only have God complexes, but also have jock sniffing doctors/chemists who convince them they can stay ahead of testing. And they usually do. The low percentage of test failures in MLB & especially the NFL is the proof. LOL @ anybody thinking the NFL is nearly as clean as the testing says. Please.