If this game was balanced at all
There would be no need for bans. The fact that there are bans in this game is riot's way of saying "there is no such thing as balance and there never will be." also, "We definitely sell power."
Just look at champs like riven and xin zhao. Riven has been at the peak of viability pretty much since release, while xin zhao is still not viable even after his recent rework and buffs. They just release juggernaut patch and make him completely unplayable again.
Also, lets look at IMPORTANT stats for worlds. Sure, 70 someodd champs have been picked ONE time. In reality though, Elise and skarner are the only realistic jungle picks, and half the reason there have been 70 champions picked is because people have banned out the current top tier champions in that game, thus FORCING someone to play something new. Its not so much a statement of how balanced their game is as much as it is a window into how predictable this game is.
Elise isnt banned? picked 1st round every time, except by teams that don't know whats going on. Kalista isnt picked or banned? picked 1st or 2nd round every time. I can't be the only one who sees this pattern.
Having 78 champions played in worlds doesnt mean anything when they are only picked because elise and reksai have been banned that game. How about we see the stats on reksai and elise in worlds?? banned or picked at least 95% of the time? yep. but those champs are both totally healthy because u can ban them right? Pretty easy to see how you reached 78 champs played. But in reality, they would have just picked elise or reksai if they had not been banned because those champions are without a doubt the best in the jungle right now. balance team is a joke and hopes noone notices stuff like this.