Can you play multiplayer with XBox and XBox 360 games together?

For example, my friend has the XBox Guilty Gear X2. If I download it onto my 360, can we play it together?Can you play multiplayer with XBox and XBox 360 games together?
I'm pretty sure both of you need the original game.Can you play multiplayer with XBox and XBox 360 games together?
I would have to say no but I am not 100% sure.Can you play multiplayer with XBox and XBox 360 games together?
No luck DUDE sorry actually you cant sorry its such a bummer

360 Live is different

Tough Luck I Guess 100% sure i have tried

mbusa

dragon age 2 best