The diffrence is whomever made CS didn't also make vic2 and ck2, compared to those games eu4 just seems like a waste of an interesting period.
In case you care, i have played all 3 of those games.
CK2 31 hours
Vic2 216 hours
EU4 3900 hours
I personaly think design wise Vic2 is the best out of the games. But it is programmed horifically, with bugs, inconsistencies and an economy model that will inevitably crumble appart.
Ontop of that its UI must have been designed by a blind person. Just look at the factory menu and tell me its not the worst piece of UI ever.
If it had the same polish as the later game do my numbers would look alot different.
When attempting to play CK2 i find myself starring at the screen waiting for things to happen so i can react to them to the point where a single event popping up is a highlight.
There is so little for me to go and and do actively instead of passively that i lost interest real fast since i bought the base game back in 2012.
Right from the start EU4 offered me stuff to do and stuff to learn. It having a base in history, with events and disasters is just a welcome extra.
If you put EU4 in a fastasy world with the same mechanics it would still be playable and enjoyable.
I look at games and evaluate what they have to offer. Gameplay, story, lore even immersion. If stuff fits together i play it.
You can go ahead and be disappointed that a game, good it may be, still wasted much potential, i have done so many time in the past.
But going into a game, playing it and then complaining that its not a different game is pointless.
Can i imagine a EU4 with more interesting internal management? Yes.
Would i play such a game? Most likely. Yes.
But as i said, i dont want such a game to come at the cost of the current EU4.
Instead of going about complaing that EU4 is all blob im hoping that Vic3 is that other game.
Or some other company makes a game like that.