Well they've won the last 4 titles with 83, 89, 83 and 96 points, so I'd not be too hasty to discount an 86-89 point season.
That 96 was a freak with Zlatan getting nearly 40 goals and Cavani chipping in too, something Emery hasn't had the luxury of. And there's actually been real competition this year from the start so they've been under pressure that might not have as bad before.
Either way, it's not a massive failure. I just seem to remember people wanting him last year and from my limited watching I don't think he's been so bad that people's minds should be changed.