Neither game is in the sweet spot. POE2 has an amazing campaign but the endgame is super grindy and unrewarding.
D4 has an ok campaign but has better loot progression and ways to get more powerful.
Having said that, I this week I geared up my sorc in two nights from scratch (no bank loot) including getting some GAs from the obol vendor and perdition from crafting and I’m one shot deleting everything now. I’m already at the ‘now what…?’ Phase. It’s feeling pointless now already. Did uber Lilith and it was only the mechanics I had to worry about, my dps is insane.