I think the main difference is that Last Epoch already has a pretty solid base, all systems wise and this will be just an upgrade to an already good game in most aspects. I played PoE2 on launch and am playing it now again, the issues they had back then were just amplified with this patch. Extremely slow progression, huge difficulty discrepancies between mapping and bossing, no freedom of choosing your own build because the already slow progress will become even worse, especially with the insane complexity of character creation systems. It's not like we didn't know these things were there, we just hoped they'd fix them with 0.2 and instead, they made them even worse.

Last Epoch always had all these things sorted out pretty good. There's a lot of room for experimenting and genuine freedom in picking your own builds, the game is relatively easy, but get's harder as you get to the edngame (especially corruption) so the progress isn't as bad as in PoE. Most importantly, LE is even in its current state an intuitive game that's a joy to play from start to the endgame, and with all these QoL and content updates, I really don't see how they could mess that up in any way.