Sorry, it was meant to be an hyperbole, not a strawman.
And I am fine with the Sony definition, because we know that the term is pure PR blurb. If the Wii had come out before the 360 and the PS3 then Nintendo would have tagged it as their next generation of consoles. But i'm not sure if the general consensus would have been to define a "new generation" because of it. Maybe the PR spin of Sony and MS about HD gaming would have won and it would have been considered part of the same generation of the GC.
But again my comment was against trying to see much market sense in these definitions. They are creatures of PR to which way too many gamers attach all the wrong significance.







