Hey guys, this is a question to anyone who knows about MLB. Just trying to create my own rating system to figure out which teams in MLB have the best offense and defence, in terms of scoring runs. I've looked into it a fair bit and found that the following stats are probably the most important in trying to judge teams. In your opinion, which stats are the best?:

-At bats average
-Hits per game
-RBIs per game
-Total bases per game
-Slugging %
-On base %

Any info would be greatly appreciated cheers!