Daily Reminder Nami Does More Damage Than Sona
Sona:
- Staccato: 21 Base damage + 14 per level (+ 28% AP); cooldown: 3 spell charges
- Hymn of Valor (on-cast): 40 Base damage + 30 per rank (+ 50% AP); cooldown: 8 seconds
- Hymn of Valor (on-hit): 20 Base damage + 10 per rank (+ 20% AP); cooldown: 8 seconds(shared)
http://leagueoflegends.wikia.com/wiki/Sona
Nami:
- Aqua Prison: 75 Base damage + 55 per rank (+ 50% AP); cooldown: 12 seconds -1 per rank
- Ebb and Flow: 70 Base damage + 30 per rank (+ 50% AP); cooldown: 10 seconds
- Tidecaller's Blessing: 25 x 3 (75) Base damage + 15 x 3** (45) **per rank (+ 20% x 3 [60] AP); cooldown: 11 seconds
http://leagueoflegends.wikia.com/wiki/Nami/Abilities
There you have it, the most common comparison of them all. Sona vs. the champ that **LITERALLY **replaced her in the meta, after the Support Class Update in patch 3.14.
's damage is applied instantly (provided she has her 3 spells used before) All she has to do is Q-Auto and that damage is instantly taken without any counterplay besides for "Don't get close to her" which is always a stupid argument imo.
can do more damage overall but she can miss some of her abilities...Well mainly Q since even though her ult is technically a skill shot, it's not really something that you'd miss but it can be dodged with flash or mobility though at least. Then there is her E which while it can't be dodged, it's still reliant on auto attacks so its not as instant as Q-Auto.