In my fantasy league, we use a simple formula for starting pitchers that gives them 1 point for each 1/3 IP and K, and subtracts 1 for each H, R, ER, and BB. A win is worth 3 points, a loss -2, and then there are small bonuses for complete games, shutouts and high strikeout totals. Based on this formula's average points per game, the top five starters in the Majors right now, in order are:
So, the formula does a pretty good job of sorting things out.
Here are the rankings of the five Brewers starters right now: