While I'm in the audience that liked RE6 as a dumb co-op action game with a mixed-quality campaign and good fighting mechanics, Revelations 2 is not good in a RE6 sense and won a lot of people over in the OT when its episodes were coming out. I am a weird one that likes older and newer RE for different reasons, but can easily differenate on why I love both.
It is low-budget, but actually is kind of slow-paced and atmospheric, has some incrediably tense encounters and maybe some of the most tense boss encounters in the whole series, has a story that is actually fun and enjoyable instead of dull and unmemorable with uninteresting characterization l (which RE6 and Revelations 1 had in my opinion in a lot of ways), plus playing in the hardest difficulty from the start at least, I was aching for ammo types, herbs, and had to play strategically, which worked with the slowet pace of the game. Plus the later episodes had some light but fun puzzles, the last episode had a wonderful callback scene that lasts 30-40 minutes, the true ending was fantastic and cheesy in the best possible way, and there was some cool scenes and hooks, like this part in episode 1 in some creepy woods, and things you did in Claire's scenario woukd affect Barry's scenario, and so on.