Bhagavad Gita, Chapter 11, Verse 43

You are the Father of the world, moving and unmoving; the object of its worship; greater than the great. None there exists who is equal to You in the three worlds; who then can excel You, O You of power incomparable?

No one else is named here as even close to comparable, a real, singular claim, not exaggeration for effect.

Calling Krishna the Father of everything and stating plainly that nothing in the three worlds equals him leaves no room for qualification. Real uniqueness is stated as fact, not sentiment.