Actually, I think it's just as easy to get into Norway as an EU citizen because Norway is in the EEC. It's confusing, I know, but the freedom of movement thing is applicable here as well.
I'd think so too, but not sure about exact terms and amounts of paperwork. Oslo has higher rents and prices but also higher wages and lower taxes. I think he size of the tech/programming job market is probably quite a bit larger in Stockholm though. So if the advice is for developers only, I'd recommend Stockholm over Oslo. For many other jobs it would be the other way around.
