Great video!
One very important thing no one mentioned is that KDR drops off from T3 to T2. At T4, my KDR was something like 4 getting out of it, dropped to 2.5 at T3, and now is ~1.5 at T2. So the drop is not as big as 4->3, but there is some drop, which indicates a good level of skill in the higher tiers.
Other than that, brawling PUG becomes less viable in higher tiers, due to people deathballing. In T4, you can run around in a small pack, and brawls all over the place. In T3, somewhat. T2, everyone is already part of the deathball. You only charge in to brawl as part of a combined push, or to mop up the survivors. I find myself taking much more ranged weaponary. The only exception to this is light mechs, where SPL knife fighters are still good.
Edited by KBurn85, 17 February 2016 - 06:19 PM.