BION had the powers of:

Sun Boy

Light Lass

Phantom Girl

Invisible Kid

Saturn Girl

Andromeda

Cosmic Boy

Element Lad

Karate Kid

Shrinking Violet

Colossal Boy

Ferro Lad

Princess Projectra

Lightning Lad

Triplicate Girl

Mon-El

Brainiac 5

Matter-Eater Lad

Chameleon Boy

Ultra Boy

vs

Composite Superman had the powers of:


The ability to grow to giant size (Colossal Boy)
The ability to shrink (Shrinking Violet)
The ability to divide into 3 people (Triplicate Girl)
The ability to fire lightning bolts (Lightning Lad)
The ability to generate heat and light (Sun Boy)
The ability to make things super-lightweight (Light Lass)
The ability to make things super-heavy (Star Boy)
The ability to consume absolutely anything (Matter-Eater Lad)
The ability to turn invisible (Invisible Kid)
The ability to inflate into a large ball (Bouncing Boy)
The ability to stretch any part of his body (Elastic Lad)
The ability to shapeshift (Chameleon Boy)
Telepathy (Saturn Girl)
12th level intelligence (Brainiac 5)
Magnetic powers (Cosmic Boy)
X-ray vision that could see through anything, even lead (Ultra Boy)
The ability to transmute elements (Element Lad)
The ability to phase through solid matter (Phantom Girl)