I agree, the title "Worst company in America" is definitely worded badly. It's from the Consumerist, which means it's the company with the "worst customer service" or "worst attitude toward consumers" or something along those lines, basically. The investment banks causing the mortgage crisis may have great customer service, who knows? Most Americans don't deal with them on a daily basis, so they're not ever going to win this poll. And BP is not an American company anyway, but no one was complaining how they treated customers. Regardless if most of them are conscious of it are not, EA systematically treats their customers like resources to be mined rather than partners in a mutually beneficial relationship. No one (or at least no one significant) there understands the golden goose principle.
If you've seen The Wire, it reminds me of when Avon Barksdale is at a party at a club and two guys walk in high (his customers most likely) and he looks at them in utter disgust, then has them thrown out. That's why you have been winning this poll, EA. You're the supplier, and we're the junkies, and since there is a cohort of "addict" customers that will continue to purchase your product regardless of how you treat them, you maintain the status quo.