You obviously don't know many of the pro players considering I am one of the pro players who competes in all of the national and one of the international tournaments. Also I did not come from Dota nor did a bunch of the other players. Honestly you have no clue what you're talking about. There...
Karthus ult is the best in the game without a question.
1) Global
2) Damages everyone
3) insane AP ratio for a multi target spell
Unless for a specific example where you need CC (amumu ult) or to protect a hyper carry (kayle ult) then karthus ult is the best overall general ultimate.
/thread
You're fucking retarded. Closed beta was two years ago. The game has had so many changes since then. And even in beta the games didn't last 10 minutes. Why do you think LoL has a pro player base that destroys their "casual" player base? Why do you think there is such a skill gap difference...