Yo, Putnam, no need to get so defensive. I'm not saying DotA is bad. >_>
Okay, that's just wrong. Unlike League, at least Dota provides you tools to, you know, learn about the game as you play it. There are guides in-game and you can click enemy heroes (or read tooltips in the "killed by screen") and see what their abilities do, not to mention that there are no replays in League (meaning you can't watch someone else play a champion while you read the descriptions yourself without awkwardly watching a youtube video and tabbing to a wiki article) or play the champion without waiting for a free weekend or buying them.
Yep, Dota is vaaaaastly superior to League in that regard (definitely has far better general usability), but when I said 'lower burden of knowledge' I meant that most abilities in LoL kinda do the same thing... (Or slight variants of.) There's no crazy shit like Invoker or Chen in League.
Also, at the point where League cemented itself as more popular than Dota2, the burden of knowledge
was lower. The items and general gameplay concepts are also somewhat simpler.
Not to mention that Dota's heroes are consistent. None of them have non-mana resources and none of them are manaless. Burden of knowledge has been a bigger problem in LoL than Dota for at least a year now.
And LoL has been far more popular than DotA for longer than a year. I'm not sure if they're approaching each other or staying at about the same level though.
Also, the graphics thing is 100% opinion. In fact, if you go by quality alone, it's straight-out false; League's graphics are dated as hell.
Yeah, that was my bad. By graphics I meant 'aesthetic'. From a purely polygon count standpoint DotA definitely beats League, but it's nowhere near as colorful (at least the last time I saw it).
There's also the little things, like how much of a pain in the ass last hitting is in DotA. (Purely personal issues though.)
Seriously though, I played DotA for like a week then went to League and I was like 'This last hitting is so easy. The guy I'm controlling responds instantly to my directions and the animations are so quick and the damage is so high.'