that's because the metagame of HoN/dota is different with LoL.
no creep denying just means that you're more focused on last hitting creeps for gold, harassing your opponents as well as jungling.
at early game, spells use very little mana so you can harass your opponents very often.
very different compared to dota or hon where you can only use your spells 2-3 times ( 2 for most heroes, 3 for int heroes ) before your mana runs out.
and they don't have active items either. no items like guinsoo, mekansm, arcane ring, necromicon, pipe, etc.. plus each creep kill only gives around 18 gold. therefore you don't really have to worry about denying.
jungling is also a very important part of LoL, even more important than in dota or hon because some neutral creeps give heroes some kind of buff
- faster cooldown on spells ( blue buff )
- a slow on your every attack ( red buff )
- pretty big exp and gold reward ( dragons )
you don't really have time to sit on a lane creeping/denying in LoL.
it will take some time for dota/hon players to get used to the idea of no denying. once you've played a decent amount of games, you won't even notice the difference.
i do have a problem with LoL though.
no item carrier. i mean seriously.. wtf were they thinking with this ?? it's a huge pain in the *** not having a carrier.. not too mention that you can't buy anything if you're not in your base.. WTF !?!?!





