Did you actually read what I said? I didn't say while they're going over cannon. I said from one cannon to the other team's cannon. Have someone stand on one base's cannon (halfway from the cannon and the back wall) and have you stand on your cannon (halfway from the cannon and the back wall). Have him run across cannon in a straight line.. then you shoot at him four times, he will not die. That's the definition of a very crappy weapon.
The BR takes FOREVER to kill just from Pink 3 to Car 3 while in gameplay and both players are moving.
And hey, guess what, the DMR is hitscan. This means you don't lead your shots with the DMR.
And MLG uses the H3 BR because it's the only weapon they can use... Stop arguing about something that's false. DMR > BR, not much more needs to be said about it.

