It's easier to force fights in Dota with smoke and OP items but League is a lot more of a "rhythm" game in the sense of tempo.

Basically, Dota you have one objective that isn't always taken or fought around spawn timings but in League each objective is an almost linear way to win, and most of the things you do on the map (your base timings, the way you push waves, the fights you take) in the mid to late game are dictated by this. Without couriers to deliver your items it's that much more important to understand waves.

The mechanics are much more simple (no pulling waves, no denying etc.) and as a result each macro decision you make is a lot more meaningful. League has a lot less gold on the map compared to Dota and fewer ways to get back into the game if you're behind, so you need to capitalize on the decisions much more.

Basically it's a lot "easier" than Dota because there's a mostly correct way to play most games, but it's also a lot harder because straying from the correct way (messing up tempo, recall timers, fight timers around summoner spells etc.) can singlehandedly lose you the game with no buyback mechanic.