You’re judging NFL stadia by one metric, roof coverage. As the link you provided points out, there’s a number of factors that determine whether stadia get built with roofs, and one thing I’ve noticed about US stadia is that they are either fully roofed or uncovered, they just don’t choose to build stadia with roofs for spectators only with an uncovered pitch, as a rule. But even when they’re unroofed, almost every other
aspect of those places is better than the majority of our stadia.
Something like M&T Banks stadium in Baltimore is unroofed but otherwise it’s pretty state of the art.
I'm yet to see any evidence to back up the often repeated claim that US stadia is better.
I'm what ways are they better?
Are the seats more comfortable?
Is the view from the stands better?
Are the corporate boxes better?
Do they have better shithouses?
Are their tuckshops better?
Do they provide easy access to the public?
Lang Park has a depot underneath it to bus fans in from all over the Brisbane City Council region. The transport is provided free of charge. This makes Lang Park one of the amost ccessible stadia on Earth.
How many US stadia provide this service?
Lang Park is close to the CBD and a short walk from a train station. It's about as good as it gets in terms of access.
The stands at Lang Park are built very close to the field of play. The rows accend steeply to provide superb depth perception from the higher tiers without being too far away from the action. There isn't a better stadium in Australia to watch a game of rugby league, rugby union or soccer. The atmosphere is provides is second to none as the fans are on top of the action.
Does any NFL stadium match Lang Park in this department?
From what I've seen the field of play at NFL stadia is about 10 or 20 metres from the grandstands.
Maybe their stadia are equipped with fancy self-cleaning Japanese shithouses and a bidot that sprays warm water on your arse after you have a shit. God knows.