This is an amazing piece of work. Amazing. It's an in-depth look at the competitive rankings of Super Smash Bros. throughout time and it's incredibly detailed.
It was put together by Forrest Smith, a Senior Software Engineer at Uber Entertainment and it comes complete with some super detailed, brilliantly designed graphs that show how the competitive consensus on the rankings of Super Smash Bros. has evolved as the game has evolved. It's actually really beautiful.
The data is focused on Super Smash Bros. Melee, which is almost universally seen by core Smash players as the best for competitive play. What I find really interesting is that, despite the fact the game was never patched or changed, or 're-balanced', the player rankings changed almost consistently through the game's tenure from 2002 until today.
Mew Two, for example, was considered one of the lowest tier characters until about 2008, when competitive players began using it again. Sheik was considered the absolute best character to use until 2006, when she started to drop a few places in terms of rank.
Basically, as the game evolved and strategies evolved, the way players were using characters changed dramatically, and this is constantly changing.
Its an absolutely fascinating study, and I recommend you check it out. I'm not even a big Smash player and I found this super engaging.
THE UNBALANCED DESIGN OF SUPER SMASH BROTHERS [Forrest The Woods]