To Clear up confusion on what makes Next-Generation

[Mazty]

curl-6 said:

Mazty said:

Then what makes the 360 elite not 8th gen? If we're ignoring hardware, it's a successor, no? Same with the PS3 slim etc. 

Because by brand they are still a 360, a PS3, etc.

Yeah but they've better power consumption. Why does that not count?
And why was the xbox not 7th gen? It was better than the PS2 and GC...