Imagine Zoro and Sanji roles reversed. Imu blocks Sanji with his tail and uses a pea sized flame to slap him in the face, while using a kick on Zoro emitting both black flames and lightning, while Zoro at least manages to block with his swords.
Zoro scholars would gas Zoro up 10 tiers above Sanji, to at least PK+ level. But the energy is different given Sanji is the one shining.
@ZenZu