watch chess and ratings based on timing

Most really good players play their long games at tournaments, and play online for fun or as opening review / experimentation. Certainly the ease of cheating in longer time controls makes those games less popular... but also blitz is a lot of fun.
Bullet games can get silly, not really worth watching in my opinion. Blitz games can be pretty good though. Especially something like two GMs playing a 5 minute game it's possible for them to produce a game of higher quality than two 2000 players playing a 1 hour game