The NFL is more popular and will be more popular because of betting and fantasy sports.
Only reason I'm into it. I got talked into doing a work fantasy football league back in the UK to make up the numbers. Once I started to know players I got into watching redzone when it was on at my in-laws, then I got into watching games when it was on...
... my big breakthrough moment was at the Steelers bar in Rome though, and watching a replay of a game with all the time between downs removed, and realising it was an exciting game once it didn't stop every 10 seconds.
Also, on contrasting the culture around the NFL, NHL, other sports... the crowd I talk to tailgating outside Heinz Field feels a lot like the crowd I'd talk to at Shales or Milanos before a Pens game. I'd agree the relative rarity of football brings out more of a party element in general, but it's the same sort of people at games.
Obviously the make up of sports fandoms that can't go to games are a bit different for both...
Anyway.
Watson being rusty for the Browns is pretty concerning for them at this point.
I also love how their lineman were complaining about cheap shots from Eagles players in practice. One, because it's funny. Two, I'm wondering if he's going to be one of the players that the refs don't protect all that much.