I don't know what kind of rumor is spreading or what's happening to your battles but I have been observing the tourneys..
I think having a (0-X) score will get you zero point/s if none of your cards won in the match..
or (none of your cards win = zero point/s)
letting at least one card win will still give you points even if you lose..
and letting a single card win to avoid a zero isn't that hard..