The first Jurassic Park movie is all time one of the greatest films ever made with the special effects still holding up to this day. The 2nd film was still very enjoyable in my opinion but it was just a cookie cutter sequel not bad, not good. The 3rd film wasnโt great at all. But compared to the rest of the series the 3rd film is basically the godfather.
As another personal pick the 1st blade movie is a hood classic good. The other 2 not so much.
Evil Dead, Evil Dead 2, Army of Darkness.
Do these count as a counterexample?
Well...
2013 slaps you shut your whore mouth! /s
Also Evil Dead is something that has never had a bad iteration. Fight me.
The 2013 one is fine, but to say it's better than the originals is a bit of a reach.
To me they're not sequels maybe that's the difference. Raimi has been open about handing young directors the keys to see what their vision is. If anything I view ED as more of an anthology at this point all the same and yet all different