As far as I know, Wynaut (or Wobbuffet idk I've only seen one and couldn't catch it) was only recently added in the castle labyrinth (and probably has a low encounter rate)
How can this not be taken the wrong way? ...What is the right way to take it? "no offense but you suck" is, contrary to the meaning implied, still relatively offensive.
I tried using a Quick Claw too, in an attempt to Perish Song it, and Ame watched every minute of it not activating ever; I can tell you right now that is not the optimal solution to this nor do I see why it's necessary to criticise someone else (non-constructively!) for not using a luck-based method.
While you have a point in being able to express your thoughts I think it could have been done a little more eloquently...
As for actually assisting in the matter- Garchomp was 75 when the level cap was 45, what did you do to try and fight that, if anything? If you sat down and took the beating given to you, you can do that here too. If you took it down through some elaborate strategy that didn't involve intimidating it 6 times and then killing it, you can probably do that here too. Personally I took a level 37 Magnezone I had on a whim (because it was shiny so I leveled it up a bit before I decided I didn't care) with Thunder Wave and Sturdy, Paralyzed it, when it died I sent out Mismagius to Perish Song it, then waited 3 turns and won decisively. And as I said before, you aren't forced to win unless you choose to be.