There is something in a name, adding numbers isnt a way to show it.
Numbers can make a product feel old in comparison to something with a unique name.
Names like Dreamcast, Xbox 360, Gamecube, N64 etc to someone that doesnt know the age of those systems will believe there recent compared to a PS2 which is soon to be 3 numbers behind the current system.
I for one support creative names, it makes a system feel unique and special compared to lets say a iPhone 3 or Samsung S4 etc. Numbers are easy however it ages the previous models considerably and makes people believe you just need the latest one.
Anyway thats my take.
That's... true though. Especially when the latest one is backwards compatible too.