I am not a fan of ERA deciding, only because I had T. Jones in my active lineup, and he got rocked. About the ONLY time all year that happened to him. But the number of runs he gave up in that one fateful inning was enough to shoot my ERA up. My week score was tied 6 to 6.
Made the difference between playing for the championship and playing for third.
But in all fairness, there has to be some sort of tie-break. ERA is fine by me, even though it bit me this time.