I hate to say it, because I think that Tyranny is largely mechanically superior (but with somewhat more shallow interactions between various mechanics, such as weapons/armor), has a more interesting setting and a better premise, and has altogether a higher potential than the relatively droll nature of Pillars of Eternity and it's universe (the only truly interesting part of PoE:s setting being the adra and soul-based mumbo-jumbo, the rest of it being quite uninteresting), but Pillars of Eternity is the clear winner as far as I'm concerned.
Despite the potential of Tyranny, it is desperately unfinished, lack any real options, and comes with so many narrative issues and mistakes that it's not worth considering worthy of a participation award. All the various pieces are there, but the game could've used another 6 months to a year in development, just adding polish and character options that makes sense in the narrative, rather than an arbitrary choice of rails so early on in the game that you have no idea what's even going on.
Pillars of Eternity may have it's large share of issues, but it's a consistent narrative with plenty of options, even if the level of reactivity is poor based on your various character choices (Priests of Eothas, for example, is a particularly laughable experience), you
almost always have a range of options on how to react in dialogues, and when you don't, those really
do stand out as oddities, such as not being able to take the nobleman's niece back to her uncle in Dyrford Village, or how you
have to be in an initially oppositional relationship to Raedric, no matter your actual intention. In Tyranny, however, your reaction is almost always a foregone conclusion based on unrelated choices made earlier, and instead of having a range of dialogue or situational options to characterize the player character, your character has been pretty much decided for you,
unless you want to act like a schizophrenic sociopath with a severe case of Chaotic Stupid. I swear, the writing fluctuates between "totally reasonable guy that's with the Empire for various reasons" and "murderhobo imperialist/barbarian multiclass: the game".
Pillars of Eternity, unfortunately, wins by walkover. And it's a crying shame, too.