>>54977421There's also the fact that the supposedly scariest mon on her team in DPPt is horrendously weak to getting Intimidated, and Sinnoh hands you strong Intimidate mons like candy.
Staraptor, the most common mon in the game on land routes craps on most of Cynthia's team and can cripple Garchomp with a switch-in.
Luxray, another mon that's super common can beat most of her mons too, and do pivot Intimidate-switches on Garchomp.
And Gyarados is of course the most common water-type, and sets up entirely for free on Spiritomb, but even if you don't feel like bothering with that, it can still just switch in on Chomp and neuter it.
At least for BDSP, they put Swords Dance on Chomp to stop this from happening.