a agrument could be made for every stat if thats you look at it...
Runs- Rewards players that have good hitters behind them
RBI - Rewards players that have people that get on base before them and they can hit them home.
SB- Rewards players that are fast.
HR- Rewards players that are stronger and can hit it farther, while discriminating against the contact hitters that HELP their teams just as much.
Saves- Rewards the pitcher that pitches the last inning for the winning team
Every stat category is a measure of skill in one way or another... thats my opinion