If you ever have a live human being look at your CR, (i.e. a manual review) "Closed by consumer" does look better than "Closed by credit grantor". That being said, manual reviews are not too common nor does it appear to be substantial difference. But yes, as far as your FICO is concerned they are no different.
I've got a feeling that just about everyone on the planet will have that notation appearing somewhere on his/her credit report, given the credit climate of the past year and a half...I don't think even a manual reviewer would pay much mind to it at all, as the account was closed in good standing.