What is the "plus" about removing the verified bank account? 
For the most part, it's confusing. "Homewnership not verified" means (98% of the time) that the borrower doesn't own a home, but "Account not verified" very rarely means that the borrower doesn't have a bank account.
Prosper won't verify an account until a listing is 5% funded, unless the borrower knows the secret handshake. And verification can several days. That means that many (most?) listings start out as "unverified account." Since Propser won't release the funds until a bank account is verified, every borrower becomes "account verified" at some point in time, or she doesn't get the cash.
The only reason to use this as a bidding criterion is to avoid having funds tied up in a listing that ultimately fails verification because the borrower cannot verify her account. If, as Andrew says, most verification failures occur for reasons other than the bank account, the confusion likely outweighs the benefit.