"If you put a team in London, I don't think it would be difficult to make a profit.
"But what do you do when [they] have to play 10 games in the United States? How do you get them to travel? Do any of the visiting fans travel at all? That's an entirely different sort of issue."
Steve, who made the journey from London to New York, was also skeptical about the reality that NFL could become a regular fixture in London.
"The time zones and travel present a serious issue," he told CNN.
"To have a global sport that's weekly is troublesome. If you break it up into something that is less frequent than weekly and that allows for serious travel then it makes sense.
"[A London franchise] is a great idea, the NFL would make a ton of money out of it. I just haven't figured out how it could work!"
The man in charge of the game, Commissioner Goodell, is also juggling the numbers to work out how to develop the game away from north American shores.
"What is the next step? Do we move to three games, are there other ways to grow the game in the UK?" he said. "This is a market where we need to be more active and to grow our game."
For now, Peterson -- who had never been outside the U.S. before his trip to London -- and his fellow Viking raiders can feel satisfied with winning the game, as well as perhaps inching the NFL a little closer to a permanent place on sport's European map.