For so many years Japan has been written about for a nerf and it still has yet to happen.
Their musketeer speed is OP
Their culverin-horse archer is OP
Their samurai are OP
Their daimyo is OP
The way they collect food and gold with no risk to villagers at all is OP
Their explorers blocking your hunts with shrines is OP
Every single game against them is the exact same, you either are fortunate enough to play someone stupid enough to waste their units, or they will wither away your advantage and eventually overcome you because they have more paths around what you’re doing than you do as a Euro civ.
It is not even worth playing if your opponent is Sweden or Japan, literally just resign at the beginning unless you’re already playing those civs because it’s a waste of time 1v1