With the implementation of an online connected system to every Tekken 7 arcade cabinet, Namco can collect all kinds of usage data from the players that go into arcades to play the game. On the Tekken-Net website for Tekken 7, they've started listing the nationwide most popular used characters in Tekken 7 for Japanese arcades. It takes a month for the rankings to aggregate all the character usage data and publish it for the website so we now have data for the month of April. If you have a Tekken-net account, you can see the ranking yourself on website under the 'Ranking' tab. For those who don't, I went ahead and screenshotted the page for everyone below.