Lol I feel like such a slowbro now, thank you! :)
This is actually a very smart play by the Masters winner (did anybody catch his name, by the way?)FIRST MISTAKE THAT MAKES NEARLY NO SENSE COMES IN TURN THREE• Keep Salamence into get sacked for a free switch in, it is not going to do anything again, and potential for Hydreigon to switch out now again after using Protect is high coupled with the off chance that Conkeldurr carries Wide Guard so uses Dragon Claw to KO Hydreigon and hope that Conkeldurr is min-speed so Choice Scarf Salamence can still outspeed. Uses Drain Punch on Salamence maybe predicting a switch and to sack Hydreigon for your own free switch? This was the first mistake, best move would have been to Mach Punch Garchomp and try KOing Salamence with a move other than Draco Meteor, but tries to maybe double target Salamence with Drain Punch + unknown move because Garchomp KOd Hydreigon.
After having watched two of the videos you linked and cross-referencing the names between those semi-finals videos and the finals videos I found that the other two pokemon the person who got 2nd was using were Cresselia and Rotom-C. (Source http://www.youtube.com/watch?v=BxL3q00TUJE and http://www.youtube.com/watch?v=ZkAxJ8qyMpA)This is actually a very smart play by the Masters winner (did anybody catch his name, by the way?)
If he had taken out Garchomp and Salamence that turn, he would have given two fresh Pokémon a free switch-in, with a weakened Conkeldurr and Hydreigon (who at -2 SpAttk can provide no real cover fire for Conkeldurr). His opponent could have taken a divide-and-conquer option, leaving Hydreigon a sitting duck while taking out Conkeldurr, turning the momentum in his favor.
Sure, with some prediction he might have been able to take out Scizor and Tyranitar with those two. But he has no idea what else his opponent has at this point. No idea if he can get his back two in without taking heavy damage. By sacking Hydreigon to get Specs Rotom in safely, he's playing it safe and making sure he can keep up the pressure.
Furthermore, by not going for the obvious Mach Punch he casts doubt that it carries it at all, and make his opponent think it's a Drain Punch\Wide Guard set.
By leaving Garchomp alive, he can execute a divide-and-conquer strategy of his own, because he knows Mach Punch will KO Garchomp before it gets a chance to move, so Rotom can focus on the other Pokémon safely. If he had taken out Garchomp the previous turn, both incoming Pokémon would have a chance to move and take out Rotom and\or Conkeldurr.
It was Grass Gem Rotom-C, just fyi.human said:Tyranitar Rotom-C vs the remaining Pokemon, Hydreigon once again needs to be saved to handle max speed Choice Specs Rotom-C with Flamethrower. It is obviously choice specs as can be seen by how it OHKOd a Tyranitar (unless it was a critical hit, I can not read Japanese)