I would even go a step further and say that the '3300' term is now obsolete. The hardware is simply a variant and is independent of the software running on it.
For example, the AX is hardware the same for the old '3300' product, now called MCD, as it is for the SX200.
Software: MCD or SX200
Platforms: CX, CXi, AX, MXe II, Sun Server, etc....
SX200 only runs on CX, CXi, and AX, while MCD runs on all of them.
* Note, sure the base hardware packages may change between the SX200 and MCD, but the underlying hardware is the same.