No, it's not ironic. The way you're saying it like the Xbox 360 wouldn't be fuctional without XBL. XBL is not a necessity. So that argument fails. As for the PS3's FUTURE exclusives, you only listed three. Hell, I can list three XB360 exclusives that are already released. Project Gotham Racing 3, Gears of War, Dead Rising....wait, I'm not done. Saints Row 1, Kameo, Crackdown, Viva Pinata, Dead or Alive 4, and many others.
As for those PS3 exclusives:
Metal Gear Solid 4: May be great, but is it too late to save the PS3? Yeah, it is.
Resistance 2: Woo, another half-assed FPS. With decade-old gameplay.
Gran Turismo: GT has NOTHING on Forza.