Firstly, Ed and Lorraine Warren are truly controversial figures. Many people, including myself, believe they were basically snake oil salesmen, cashing in on the hippy spiritual culture of the 60s-70s.
That being said, the characters portrayed in the film are okay. I would have liked them to be less Pius but I suppose that was part of the Warrens' schitck irl.
Conjuring 2 portrays the Warrens as having WAY more involvement in the London case than actually occurred. In reality, they were there less than a week and basically told everyone it was all a scam put in by some mischievous kids and a gullible mum. Btw, it actually was faked, as admitted by the kids later in life.
I really enjoyed the first Conjuring, it had a very classic 70s horror vibe, combined with the special effects tech of the 21st century. I felt like this sequel was an attempt to cash in on the success of the first movie and it showed. The story felt rushed and not well thought out, even without knowing all the actual facts, the same way Annabel: Creation sucked but Annabel Comes Home was much more put together.
The writers are definitely attempting to cash in on the entire Conjuring franchise (conjuring; annabel; the nun) and I don't blame them nor do I mind, as I am a horror fan, but I really would like to see them elevate their game and make these truly "pee your pants" scary and not just a weak popcorn flick, the way Conjuring 2 was...
Review of The Conjuring 2
