If your starter is giving up 4-5 runs you are looking for offense to compensate and your bullpen to be strong.
Here is the ranking of teams by number of games in which their starters have allowed four or five runs.
Clearly, the Texas Rangers have the offense that can overcome a weak start, but the Twins do not. Looking at the bottom five we have the three teams from the AL East and you can see why the Yankees have the largest lead in baseball. When you see Detroit in the middle of the pack, you also see why they have struggled this season before finding their recent groove and why the Anibal Sanchez acquisition could be so significant for them.
Next, we look at the frequency of 6+ runs per start.