In fact, Douban is not a typical audience ranking system, many movie fans prefer to discuss or credit films here, I hope LLL can at least get 8.5 or more after releasing, but it's not that easy. And Maoyan is more close to the general public, an 8.8 on Maoyan is good but not excellent.
BTW, for Maoyan scores,
above 9.0, excellent,
8.5-8.9, good but nothing special,
8.0-8.4, okay but not good,
7.5-7.9, Poor,
under 7.5, extremely awful.
The highest score on Maoyan is Zootopia's 9.5 and the highest score for non-animated film is Hacksaw Ridge's 9.4.