Why do GP players earn the most gold and why do Janna players ward the most?

GP players get the most gold because of parley, which gives him bonus gold (and parley a barrel gives you bonus gold for everything killed) janna is a higher level support so people playing her more than likely know how to ward

Because it's Bank-plank and... j-wanna ward more?

ehheeheheh xD Sorry that was bad...

The speed advantage Janna has definitely allows you to go out of lane and Ward more than other supports.

Janna's speed boost definitely helps. Im surprised she wards more than bard tho, tbh

Gp is self explanatory.

Janna is a brain-dead easy to play champion. Because of this she can focus on other aspects of the game,like warding. Her movespeed helps her too.