imagine if they actually picked draven nami instead of ezreal nami in the lcs

What? Why draven?

but he is also 10x easier to beat, ezreal is safe and is just as strong as draven, draven is way to feast or famine for lcs

Draven's DPS is second highest after Kog's, and conditionally third after Vayne if they're facing a tank heavy team. He isn't very mobile though, which will probably keep him from seeing much pro play anywhere. I think he would be a great ADC for bulldozing teams if he had a good peel support like a Janna.