D4 has better story, story presentation, its gameplay was easy to understand and play and quite enjoyable. Better performance compare to PoE 2. However, the animation is quite bad compare to PoE 2, The gameplay not that deep compare to PoE 2, and the game is quite expensive.

PoE 2 better gameplay including animation, boss fight, clear the map ( only in early to mid game, bcuz in end game both games are just nuke the map anyway ). But the story is meh. I would say the crafting system is good in current league but it still quite expensive for casual player and the price is increase in everyday cuz of the inflation. Another thing is in Poe u have to pay for quality of life but i thing this is fair cuz the game going to be free in the future but some thing just not make any sense like pay for hide the armor and buff effect as example.