I'll submit that the vast majority of folks with outstanding warrants are not paying $300 to $10,000 for Super Bowl tickets. Ones living a comfortable life like that where they can afford those tickets also has jobs and LinkedIn profiles, where they could have been served warrants.
I probably shouldn't have started this conversation. Face recognition at Super Bowl games started in 2001 in Tampa, 14 years ago. The results were dismal, but negative public opinion about the use of the technology was not. Since then the technology has greatly improved and so has the secrecy and absence of publicity.
A friend of mine works security at Burning Man. You can google that all day and all you find is what can happen if you get your picture taken and it ends up on facebook. You do not find on the internet about the technology that takes place behind the curtain. I don't think some the people with outstanding warrants that are coincidentally discovered in attendance at either event have any idea how they were discovered.
Burning Man attracts lots of hippies. Not corporate ticket buyers like Supebowl.