Actually for GC, Xbox and DC some people considered it to be classic already because the console has been discontinued for some times and their technology is not really current-gen (Since PS3, X360 are current-gen now). This is if you differentiate by the generation of the console of course.

But for PS2 case, it's a bit hard to categorize because even though the technology is outdated (almost 10 year), it's still being produced in the form of the slim PS2 (9XXXX) series and still got developers coming out with new games. I think this is because Sony thinks that PS2 can still make money and that's why they take out the PS2-backward compability in PS3 (maybe due to this reason and price cut of course).

Yea that's why if you see this from mainstream point of view, PS2 will not be retro yet even it doesn't fit also for the current-gent category. It's definitely something that defies the standard, which is why it's quite special indeed.

I believe now got another game called DUX for DC rite ?

Are you sure you are getting all 3? The DUX creator got some problem with his customers now, very bad customer service.

Why LOL?

Don't back out