nah, I'm sorry but stadiums are literally designed for people to be as packed as possible. especially a full stadium is incomparable especially once you take into account just how many people there are in there. in normal living (like regular size apartments or offices). If you do the math (just in terms of plain building area) for the Santiago Bernabéu Stadium in Madrid, then you get to something like 4.7 m^2 per occupant (assuming staff numbers are negligible and that attendance is at capacity (which historically it's been overshot by as much as 50%)). A 5m^2 apartment is pretty small. this is maybe the size of a small bathroom or less than half the area of a single parking space in france. (less than a 3rd of a US one). Now is this enough space for people in a dense public place? yes. Is it. is it enough space to work or live in? not really. I mean it can be done but now we're looking at japanese microapartment sizes.

point being. this is not that great a comparison even just in how it's perceived by an average onlooker.