if winning consistent counted as always win, of course it wouldnt happen because every team will face a lose some day and stopped their winning streak or unbeaten record. But if consistent just counted as mostly get profit from all of his bet during a week, i think it still make sense to say this gambler able to make sure his betting can profit consistent. So, this is depend on personal perspective. But, I agree if luck the main role behind to bring gambler to the winning session.
All of what you've said, I agree with if it's about the consistency of the team and as well as the bettor. But I beg to disagree about luck is the main role here.
In sports betting, we've got stats to based with and that's how the bettors are looking up to if they are going to bet seriously.
While I don't dispose and ignore the factor of luck, it's not the main thing that brings up a win for both bettors and teams.