Note the 99. For comparison, a perfect win streak from S+30 to S+99 takes almost 20 games. On average, a loss during that requires, say, 1.5 more victories to even out your Rank score, keeping your Vibe level. In a four-hour slot, you don't have time for much more than, say, 80 games if you win by near-sweeping KO in loads of them. That means that you can only lose, ah, 16 games (and they'd have to be really quick losses) to get +40.0. More realistically, I'd imagine he played around 60, lost 7? Possibly fewer. The length of time it'd take to lose just bothers me, as if you're playing so dominantly already, you won't let a KO go by easily, especially with a weapon like that. Also, if you just barely maintain the 99, you'll have a cycle of two losses and five victories, and after every seven games, you'll be up 3.0 Vibe points. At that point, +40.0 almost doesn't seem that far removed from... regular human skill levels!