Arencibia's K/BB ratio reminds me of an old PS2 baseball game I used to play (All-Star Baseball 2005, I think). If I simulated games, players would seem to walk normally, but when I was actually playing a game, pitchers would rarely throw balls. Most PAs rarely went more than two or three pitches because they were always throwing strikes. So if I actually played the whole season myself, a lot of players would have anywhere from 30-50 Ks, but only a couple walks. I think the most walks I drew was about 10 in a really bizarre season with Tony Batista. They really liked to throw him breaking balls outside.