Well, the PS2 IS being phased out, though it is far from dead.
It is being phased out to make way for the PS3.
And as far as the XBox goes, it is a real PC inside...made and marketed by our bestest buddies in Redmond, M$.
Also seems there have been a few problems
lately....like over 20% of those cheap-@$$ HD's failing in a short amount of time, and destroying game saves and other irreplaceable data.
One in five HDD's failing...yikes.
IMHO, the only use for either of these is to install a huge HDD into the XBox and install Linux on it. I won't comment on further uses for this arrangement as the DMCA has deemed making a backup copy of software you own a user license for illegal; however, it is safe to say that a few little modifications can make your XBox a lot more user-friendly than it is now!!
Even if it does have a crappy vid card in it.
You DO know that you can get an app that lets you emulate either of these on your PC, correct? Though since they were coded for the 32MB graphics cards of the consoles, they will not look nearly as nice as a PC game would.
Look for Doom III on the XBox to look a lot more like Doom II than DIII on a powerful gaming rig...the consoles just can't maintain framerates while pushing all the bitmapping and lighting effects like any decent 128MB+, 256-bit ATI or nVidia card with a 400MHz clock can. That sort of 3D rendering takes a good processor and lots of fast physical memory, and it just isn't there. What is the XBox using, an old PIII-type CPU with 700MHz clock speeds, IIRC...
But YMMV. Good luck with your search for knowledge!