Guess I got lucky with the layout, but beware that Scratch on persian can kill a Machamp before it can use rock slide. If you have no Giratina, Aggron or Rhyperior works I guess.
Exactly. At first try, my maxed Machamp was killed while his Persian only lost half of its Hp. Second try, I used Metagross, Giratina, and Tyranitar SD. Made sort work of his Articuno.
Lucario with power-up punch + shadow ball can clear Persian and Dugtrio single-handedly. Not sure about other pokemons… Dugtrio kinda sucks.