I was just waiting for someone to say its overhyped. I mean geeze. A few people discuss it maybe being good, and its all the sudden overhyped.
A luxray tech won't lose you the game. First they have to kill it since it would have 90 HP left. That means a different attack than flash impact. Secondly, Its really not that hard to get out another stage 1 with a damage on it. I mean, what deck can't get out a stage 1 every turn? Donphan has no problem with that.
Combparing vespiquen + memory berry to gyrados, I think vespiquen has the edge. It can do more damage, and I think is a ton easier to set up. Its also less fragile on the recovery since it can't be trainer locked. And its not weak to luxray. Its weak to chairzard, but charizard would OHKO it anyway. And you can use shaymin for even more HP than Gyarados. It may not be luxchomp fast, but I think it has serious potential.