It seems like an orange can be far more dangerous than a red since they can tear apart peoples minds:
Clancy would have been so proud of me. The way I'd used those kids, twisting them, manipulating them, ripping into Rob's mind until it shattered.
Also, we know that if the orange is strong enough they just have to be close enough to a person to enter their mind:
All I needed now was to channel the want I felt burning a hole in the center of my chest, and picture Rob's face, and the invisible hands peacefully unfurled, slithering under the seats that separated us like wisps of smoke. I had him; I dropped into his mind with the grace and steadiness of an anchor through water.
But we do know that people can fight the control of a orange:
Vida made a noise like a small gasp, her face scrunching with the force of Clancy's intrusion. She shuddered, fighting it- I could see it in her eyes just before they went glassy under his mind's touch.
The final reason that leads me to believe that oranges are more powerful is that they can control groups of people at the same time:
The boys around him began to nod in agreement, their faces strangely expressionless.
The things we know that makes the reds dangerous is that they have pyrokinetic abilities but it seems like if it came down to a fight an orange with developed abilities could take down a red. So why where reds weaponized instead of oranges?