Why do people play Nami when there is Janna?
Like think about it... their abilties are nearly identical... but Janna's CDs are either shorter or the ability is slightly better...
So why do we play Nami?
Like for example Nami's Ult is identical to Janna's Q... Nami's Movement speed is same as Janna's just Janna's is permanent... Nami's heal hits one person maybe 2... Janna's is a massive AoE game changing move
Janna's passive gives movement speed Nami's Passive gives movement speed
Janna's Q is a long range knockup Nami's ult is a long range knockup
Nami Heals and gives bonus attacks Janna Shields and gives bonus AD Janna AoE heals and knocks back opponents
Nami's Q is a small AoE knockup Janna's Q is a large AoE knockup (Nami's Q lasts 0.25 seconds longer stun duration)
Janna has a damaging slow non skill shot that passivly when not on CD gives janna movement speed. Nami has a damaging ability non skill shot that can bounce and do a small heal