I'd say "better than average" but in spite of the great acting, possibly still a little overrated as a gestalt.
Generally strong performances, even in the case of the difficult-to-like Bradley Cooper character. As usual, Christian Bale fully immerses himself into his role...though I will also admit to being slightly distracted by wondering if he shaved/altered his real hairline, and whether the overweight silhouette was genuine or digital...in fairness, he's known to have lost 60+ pounds for a role like the main character in the Machinist, so it's plausibly Method, but on the other hand I wondered how much more his body could take of all this as he ages!
But I digress. Jennifer Lawrence and Amy Adams are both actresses I respect and enjoy watching in general. This time, both were very powerful...yet also, there were slightly distracting aspects here too: in both cases, accents I'm not sure I 100% believed (interestingly, my husband is British, I'm not, but I'm the one who found Amy Adams's "English" voice less convincing).
To be honest though, I think some of the character actors/cameos were at least as interesting as some of the main characters. For example, I found both Elisabeth Rohm and Jeremy Renner (who played Mayor Polito and his wife) incredibly compelling.
The filmmaker has said he prioritized character development over plot, but I think the plot was actually good enough also. It would have been unnecessary for it to have any additional twists or unrealistic reveals. I also thought the use of music was decent (if possibly a nod to similarities with films like Casino, or even Pulp Fiction, etc.?) and actually, the script/plot with relatively few incidents of real profanity, serious violence, or graphic sex? I thought that was classy and judicious.
On the whole, I would recommend it, though I don't think it necessarily added anything to see it on the big screen.