Tried to watch The Nightflyers. And they canceled The Expanse for this mess??? Just don't bother. a confusing and messy story which doesn't make much sense. I literally stopped in the middle of the 1st episode and erase the rest of the show. 3/10.
I've watched "Nightflyers" E01-08. So will watch E09-10 soon.
So far I think every episode of Nightflyers has been interesting enough to keep my attention, which I can't say for "The Expanse", which I thought was extremely boring until maybe the last 2 episodes of Season 1. It got much more interesting after S01, but I had to "force" myself to watch The Expanse Season 1 so many times.
I don't want to rate "Nightflyers" until I finish E09-10. But so far I would rate it 8/10. 100% better than Jessica Jones, Luke Cage, Iron Fist.
Edit: now that I have seen the entire season, this is my final rating for Nightflyers: Stupid.
I would give it a 6/10. Some parts were exciting, but after episode 7, it got stupid for me.
So I would agree that it is not on the same level as The Expanse.