That's a funny analogy, because POE is the one that lets you trade high-level uniques and stuff, while D3 is the one that account binds all the good stuff.
POE has a pretty good number of builds based around cool uniques. The skill tree can look a bit daunting at first, but the official website has a really great tool for planning builds once you know what items or skills you're aiming for in your final build; which is something that Diablo 2 could've used. You always ended up sitting there doing math for 3 hours before actually making the damn character.
POE seems to be a lot closer to D2 than D3 does, that's for sure, but it also takes a pretty hefty time investment. D3 looks like it would be better for someone who doesn't have 40 hours a week to level a character anymore. I am also super interested by the gamepad controls on the console version, and don't care about the crappy graphics the 360 version probably has.