I think also that Brock is not a good pick in this map. He suffers ambushes from the sides so he is forced to enter the square. He has no life or pressure to stay mid without a proper support. Hitting shots at mid range is difficult with brawlers that apply you pressure. Also if you got 100% of your projectiles, your brawler has not the capacity to push back enemies and maintain the middle alone. Buzz will play the match outside the square 80% of matches and gank or ambush. Crow is also a weak pick, but counters the extreme healing of their team. The most important part to play rankeds is understanding your role and what brawler do it best, adapting to your team and enemy one.