How many XMR users have used 60 ring sigs? Or over 24?
I don't know the answer to that.
Im assuming 24 or 60 is better than 3 or 6…
In some ways, but there are also overall privacy effects viewing question of blockchain analysis wholistically. If everyone is using 3-6 and coins are constantly being mixed and remixed you are in very good shape because the entirety of the blockchain is essentially opaque. If you are using 60 and everyone else is using zero, not so much.