Sorry, no. Last Superbowl had an estimated viewing of combined network and streaming of 101million viewers in the US and 155million Worldwide (including the US)
Thats the 24h number, so live and catch up. Weekly numbers are bigger but they do not count for a live event.
There simply is no interest in an exclusively American sport interrupted every 10 Minutes by 10 minutes advertizing. A game with 4 quarters that lasts nearly 4hours is in a world where soccer dominates, I mean DOMINATES, not feasible. When we say 90mins, then it means 90mins, there are other things to do then watching tv. Cricked is bad enough, games can last days, but normally any sport, especially when televised, has a time frame around 2h max. Remember, outside the US we do not know about permanent interruptions for commercials. If you pay for a channel, it is in some countries even illegal to show ad breaks, you already payed for the channel. Also, how do you want to interrupt a soccer match? Those guys are athletes, more so the rugby players, they do not run around in huge protective uniforms so they do not get hurt, they are on the field and running for miles, non stop, not a few yards at a time to the next time out to have a break.