Which do you consider more successful, OG Xbox or Xbox Series, and why?

[Otter]

Success is always respective to goals and expectations... So OG Xbox.

It birthed the brand, set the pace for the next generation of online and FPS', introduced WRPGs onto console and featured a really unique library,

Financially Series Systems are obviously bigger but OG Xbox was way closer to achieving its goals whereas the Series Systems have signalled the end of Xbox. The crazy year on year declines speak for itself.