Boom, Keyhole shoots through the bubble Another counter found

Keyhole shoots thru one bubble, but what about four?

Some exotic helms give you four gg shots, you shoot all four and let your team kill them.

I'm aware of the Helm that gives four shots. What i was getting at is will one shot penetrate thru all four, or will you need four shots? If you need multiple shots, the other team can react to their defenses getting dwindled down and have their GG counter him. But if you can penetrate all bubbles, then you can just simply take out all four titans, and the rest of the team can mop up.