This data does not show that Brutes make anyone obsolete.
It shows that Brutes were a very popular AT at the time, but the same could be said of Blasters.
What it does show is interesting groupings of preferred ATs (Brute, Blaster, MM, Scrapper, Tanker, Troller) and less preferred ATs (Defender, Sent, Corruptor, Dom, Stalker), with VEATs at the bottom as least popular.