It lines up perfectly with the other sites but it gets its information from a different statistic. Pick and Ban rate are the % of players picking that champion in that role and the % of players that ban the champion respectively.
In a draft game, even if a champion was in 100% of games in a role, they could only be picked by 50% of the players.
Ban rate is similar, with the highest possible being 20%, meaning 2/10 people every game ban the champion. 10% of players banning still wouldn't be the character banned in 100% of games though, because some of that 10% would overlap as a double ban. It's extremely rare to get a banrate above or even up to 10% though, so the result is that, in effect, multiplying the banrate by 10 translates to the % of games the champion is banned rather than the % of players that ban them.
And what do you know, if you multiply the pickrates by 2 and the ban rates by 10 you get nearly identical results to other stat sites. They aren't wrong stats, they just draw their information from a different source. Just because you can't interpret data doesn't make that data incorrect.