Gardevoir has a huge problem because basically Scizor is everywhere and Bullet Punch juste destroy "her" :
• 0 Atk Technician Scizor Bullet Punch vs. 0 HP / 0 Def Gardevoir: 230-272 (83 - 98.1%) -- 62.5% chance to OHKO after Stealth Rock
Primarina is easier spammable than Gardevoir too.
The tier is really fast and Gardevoir even with a Scarf is clearly in pain. That's why she dropped in RU, because UU is just too much for her.
• 0 Atk Technician Scizor Bullet Punch vs. 0 HP / 0 Def Gardevoir: 230-272 (83 - 98.1%) -- 62.5% chance to OHKO after Stealth Rock
Primarina is easier spammable than Gardevoir too.
The tier is really fast and Gardevoir even with a Scarf is clearly in pain. That's why she dropped in RU, because UU is just too much for her.