I always find the "quality start" idea absurd. 3 ER in 6IP translates into a 4.50 ERA which means you are praising pitchers for pitching like the best 5th starter in baseball. Whoopee. bang zoom.
Give up 3 runs in 6 innings and it's very likely the other team will score at least 1 more, meaning your team will have to score 5 runs to win. Teams score 5 runs about 40% of the time so basically you are happy that your starter has decreased your chances of winning from the get go (almost certainly higher than 40% when game starts). Granted it's about accumulated games under this goal, but the goal is still way to broadly defined. 3 runs in 6 innings is not a quality start, certainly not in this day and age of decreased scoring.
Yesterday I set the base goal for Strasburg to be 2ER in 7IP and he hit that. (Arguably could have been 1 if not for Ramos' ill-advised throw to 2nd on the pitch in the dirt) This is a bit more than a quality start. Pitching to an 2.57 ERA and making it less likely that extra run comes home (3 fewer outs for the opponent and unlikely to be working through bad relievers in only 2 innings) means your team can win with 3 (which teams score ~66% of the time) or 4 runs (~53%). I think that makes a nice goal for a #1. He hit it. Team's fault the Nats lost. End of story.
Fun Fact to ruminate over
NO TEAM gets on base less often from the leadoff spot than the Nats.