No other jungler is good as Nunu...

Hi is it just me or is nunu the best jungler ever only. His w engage snowball is so great for fast incoming ganks. Rammus q is same kind of but kinda sucks way more . Whenever i play other jungler like vi or any i barerly do 1/4 of gank amount as with nunu. with nunu i can make so many ganks and still farm myself good . while with vi , i can make barerly 2-3 cause im so slow movign and all . Theres no other that can be so fast and perfect for jungle like nunu due to his healing and bite abilty also securing drags. I playd him from iron literally to dia 4 . Just nunu , 300k points . I want to play in an professional team but now i am damn scared cause i only playd nunu. Its so much harder to carry with other champs. Nunu feels like ez game for me always no matter what i am doing good.

Is he op or am i just good with him ? I started play supp and i keep winning also , but it never feels anything close as with nunu , it feels like u really have so high win chance with him.

Also i cannot decide what lane to main. I can play Nunu jungle GODLIKE , and the rest of junglers are kinda ok till meh . And supp i can play too fine good . The thing is , once u want to go pro team , do u have to specialise on one Role or can u do have diffrent champs on diffrent roles. What should i do , focus on one role or play however with nunu jungle and rest supp champs at bot . I Mean my best champs are nunu jungle , adc jhinn , and support all good . I cannot decide what lane... How many champs should i master for pro play