How come Viper often loses 1 v 3 against 1700s but Tatoh often wins against 5-6 1650s ?

Everyone criticizing my thread on Tatoh's opponents, saying I would screw up against him as well. Speak for yourself.

Interesting how someone presumably better than Tatoh usually loses against 3 1700s on HD, yet Tatoh is able to frequently destroy 5-6 1650 players on Arabia.