Water is wet.
Generally, heroes and heroes with Talents between a 40% and 60% win rate can be considered balanced. By the way, that means that Ardan’s Epic is balanced in Blitz, with a 50% win rate.
The top plot shows the distribution of Blitz Talents, the bottom plot is for Battle Royale. As you can see, there are currently 11 outliers for Battle Royale and 1 for Blitz. If you play an Idris Rare, Tony Epic or SAW Rare, you are almost guaranteed (68-72% win rate) to win. Between 55% and 60% win rate, there are also more Talents than in Blitz.
You will gain a significant advantage if you dodge Battle Royale matches during the event and invest some Glory!
The statistics can be seen on https://brokentalents.fun/#/?mode=casual_aral&lowPickrate=true.