Glyn...you stated, "Bill james is right Offense does win more than defense in Baseball, and are we really gonna pretend those 70's Reds teams couldn't hit?"
The late 60's early 70's O's built their team around defense (fundamentals) and pitching. They had a couple of power hitters (F. Robby, Powell), but they were good defensive players as well. The 70's Reds could hit, but the O's beat them in the '70 WS!
I believe a defense can change the way a team plays, as I mentioned earlier the '66 Dodgers in the WS.