Esdeath has 1.58 Petatons.
Kuzan climbs to be paired with Sakazuki who possesses the Devil Fruit with the greatest offensive power of all, which makes it superior to Whitebeard's Gura Gura no Mi which is the strongest Paramecia and therefore above Zushi Zushi. not Mi of Issho which has 1,032 Petatons.
Esdeath features Danmaku, Summoning via Ice Cavalry, Extrasensory Perception, Pseudo-Flight, Afterimage Creation, Analytical Prediction and Resistance to Heat Manipulation
Kuzan has Elemental Intangibility, Inorganic Physiology (Type 1), Regeneration (High-Mid), Body Control, Weapon Creation, Weather Manipulation, Limited Durability Negation and Corrosion Inducement, Resistance to Ice Manipulation.
His Kenbunshoku Haki grants him Precognition, Extrasensory Perception, Telepathy, Enhanced Senses, Information Analysis and Instinctive Reaction.
His Busoshoku Haki grants him Energy Manipulation, Forcefield Creation, Statistics Amplification, Resistance Negation, Attack Reflection, Energy Projection and Resistance to Heat Manipulation.
As I see it the difference in power can't be too big and Kuzan has too many weapons and resources to get the victory, Mahāpadma doesn't make much difference in the end.