You should try Abathur <3
I think HoTs can be weird for the regular Moba players (Which i'm not at all) because you can't really "carry" a team by yourself. You can't play alone, and make perfect action which will reduce the enemy avantages. There are some good action, but most of the time, it's a teamwork.
The best Hots player in an hypothethical tournament can't really win a game by himself if his partners are not really good and/or new to the game.
I tried LoL, and perhaps it's more "skilled" at "high rating", but even with lots of try, i don't have as much fun as i have in HoTs. The "grinding" part is really annoying for me. (Farming items, and the slow-paced early game).
Everyone has his own opinion i guess.
EDIT : I forgot some words.