I found the gameplay of LoL to be a bit stale and DOTA2 much more dynamic. Also, 'buying' champions to play with did not sit well with me at all. Edit: Also,

I found the gameplay of LoL to be a bit stale and DOTA2 much more dynamic. Also, 'buying' champions to play with did not sit well with me at all. Edit: Also, yes, LoL was made to run with much lower-spec PC's than DOTA2. That being said, DOTA2 has much higher levels of polish when it comes to characters, voicing and environment.