Over a week of scrimmaging is enough to get a decent idea about how easy it is to play a game competitively. A truly great competitive game is not random, outcomes can be controlled by players. A player in brink can NOT control their bullet spray closely enough. The skill ceiling with SMGs in this game is very low due to this.
A scrim is not a true competitive environment. It can give you an idea, but is no where near conclusive. Hell a single tournament isn’t conclusive it will take a long history of competition before you can even hope to derive such a bold statement. The game is not completely random as far as outcome, perhaps it will be a game that is solely based on team work.
Like I said before I am in the same boat of wanting guns to be less random, but without a proper exhibition of the game you can not say it is broken even if you have been scrimming sense launch until this very moment.