Titan Mafia has the data here, Telluria jumped to #1 tank position overnight (well, before the month was out) with 55% of the top 100 teams!!! #3 Hero in total usage among the top 100 at 57%, what a BEAST!
Ursena fell from 28% to 15% … Vela is the #2 most used in the top 100 at 57% (of all teams regardless of position), not bad for an “underpowered” hero. This link may help explain why, apart from neutering fire heroes’ attack she does some amazing extra damage: Guide "Increased damage against elements - how much? by Vikingblood80
Spoiler:
+70% damage vs Fire. Second best “extra damage” is 40%!!
@Razor is doing some incredible work over at Titan Mafia along with some other top players (some of whom are on the forum). Quantitative look at the game, actual usage along with some entertaining thoughts, videos and commentary.