In June balance, the Wu soldier minions were updated to 10%, and their burn damage was increased (since Sun Quan has only been in beta thus far, we don’t know the exact burn damage, but should be around 225-250/3 turns like Zhou You is).
So Sun vs Papyros -
Sun Quan advantages
340% damage to 3
Burn damage applied by minions hitting instead of being hit
Papyros advantages
4% larger minions
30% def up
Slightly higher dot - probably between 5-15 extra damage/turn
Passive which (sometimes) heals and gives mana to whole team (vs [always] self heal/self mana gain from SQ’s passive)
I feel Papyros’ minions applying the sand damage when they attack would still leave him behind SQ. Adding anything (small heal, small damage, self over-heal/hot, mana speed fast) in addition would make it arguable (either way) which is better - meaning balanced, for me.