I have seen the work of dozens of ordinary cup and cores, as well as an equal number of better bullets used on moose over a few decades. Never have I seen anything close to a hundred pounds of meat ruined by any of them. That said, while mono-copper/bronze tend, on average by long stretch, to ruin a lot less meat than most others, it has also been the mono-coppers which have made some of the biggest wastes of good meat. And, while bullet placement matters more than anything when it comes to ruined meat - and that applies to breaking big bones perhaps more than anything else- a monolithic bullet vs heavy bone is nowhere near as destructive as a cup and core often is.
But I tend to think meat damage is also related to two significant if secondary factors, those being very high-speed impacts, and prolonged time between initial contact with the animal and the termination of circulation (which is related to where the bullet(s) were placed).
