depends on the angle you crash into each other... if you're blitzing and hit another blitzer in the flank, only he will go down. but a frontal crash is one of the funniest things that can happen in the game.
Saw an Assault rushing me with Blitz, countered by activating my own. Team shoots the Blitzer after we both flop over. Worth it!
Edit - another thing I discovered. You can time your melee and hit the Blitzer through the shield. The Blitz does not stop melee attacks. I had the pleasant surprise of killing the Blitzer who charged me with my elbow. It was kind of weird but otherwise a good backup if you're in a bad position such as behind a corner.
Last edited by Compassghost; 05-02-2012 at 04:20 PM.