Super stones are resin bonded.
Chosera are magnesia bonded.
Ceramic bonded just means the bonding is either fired or chemically altered clay type bonding. Firing isn't just drying it vitrifies the clay.
Most ceramics are fired, chemically altered clay type binder is also possible producing an un-vitrified clay type perhaps includes a secondary binder like a resin. It could be a different base clay binder to standard that takes a higher fire temp and vitrifies more. Making a harder glassier type stone with less voids. Going on the description of the users the snow white gets reviewed as harder than normal. I can't comment as I don't own one to compare.
Did a little edit as what I originally wrote was about a clear as mud!