Yeah it's a historical difference, and Unity literally kicked out its best chance to compete in that space with DOTS.

But on mobile it is king, and mobile is starting to get games that can rival AAA studios in presentation. Genshin Impact and the rest of Hoyoverse's games are all in Unity, and while not confirmed I wouldn't be surprised if Project Mugen is also running Unity (given that most of NetEase's portfolio relies on it). So it has the capability to handle AAA games, even if no one in the west is utilizing it.

As someone in the industry, those games don't actually fit my traditional mental model of what "AAA" means. AAA doesn't directly correlate with revenue for example. The general rule of thumb I kind of go by is that a game is likely to be "AAA" if it uses motion captured skeletal and facial animation sequences.

I have casually evaluated Godot so I am moderately aware of its capabilities. The thing I did not evaluate well though is how well structured its data and asset pipelines are. The big thing a AAA engine needs (aside from rendering, console support, and perf and all that) is the ability to scale production to hundreds or thousands of programmers and artists. The ability of an engine to scale in this way is generally learned painfully by doing, and I'm looking forward to see how Godot fares on larger scale projects over time.