Hey Gretzky, guys like Soriano and Beltran are definitely more valuable than a closer, that goes without saying. I was talking about guys like Roberts and Alex Sanchez who only get you steals. In my H2H league I've won some weeks in steals thanks to guys like Abreu, Pudge, and Garciaparra, but I've lost a lot more. But I'm not about to drop a guy like Juan Gone for Dave Roberts.
In my first post I meant to say closers could help A LITTLE in ERA and WHIP, but more importantly they are not going to hurt you. We also track holds in my league and the guys I had were killing my ERA for the few holds I was getting and it wasn't worth it, so I dropped them all and just take it on the chin every week in holds.