Tactics will give you a bit of added wrestling damage, but you aren't going to be seriously killing stuff with wrestling unless maybe you have ninjitsu, even then I wouldn't count on it. That is not to say that wrestling is wasted on the character. Wrestling will provide you with melee defense which is what I think you are going for anyway. The question you need to ask yourself is simple: "Do I have evaluating intelligence?" If yes, 100 points in anatomy provides the same amount of defense as having 120 wrestling and is a slightly better play for someone who could use an extra 20 points. If you don't have eval, anatomy does nothing for you.