That’s a very deceptive and misleading statement.
Even if you are very good, it’s highly likely still a bad deal for you.
The subject has been discussed many times, no need to repeat it all, one could, for example, watch some of the reviews here with a detailed analysis, corroborated by numbers:
https://www.youtube.com/@OldGuardian/search?query=heroic%20tavern%20brawl
It’s not like I’m endorsing this particular blogger or something, but I acknowledge this kind of good work on the subject and would recommend it.
Dunno if that’s an accurate definition, but regardless, this ‘heroic tavern brawl’ is just a bad deal, and that’s it — you’ve got a point here.
So, I’m addressing everyone: please, don’t play in it. Check out some videos I linked above to see why, if you want to, or ‘do the maths’ yourself — once again, I really don’t feel like repeating it.