Disagree. Dota 2 seems like there's barely anything to it other than smashing into the other guy over and over again. It's like an RTS with all the fun bits removed. There's no room for real tactics because you have the lanes which force people together instead of allowing any sort of battlefield manoeuvring.
I'm sure there are tactics if you dig in enough, but why would I want to bother when the core game doesn't seem any fun?
I actually disagree with this and I never though I would enjoy something like Dota.
LoL is probably more about smashing into each other. They tend to say LoL is over within 30 minutes and whoever gets the boss thingy on the map first pretty much wins.
The lanes certainly don't force you together. Different characters have different roles which is where the tactics come into it.
You could pick 5 heroes who are all geared towards a team fight, initiating that and controlling it. If you're the other team then you need to pick off heroes one by one. Maybe you have a ganker like nightstalker, who is only really useful at night. During the day his kinda shitty and if you have a GOOD nightstalker (Im fucking terrible) then as soon as night comes along he starts to roam the battlefield grouping up with others in lanes to take down the other team.
You then have things like wards which give you vision of the map which is fucking crucial. It barely happens in pubs since most people don't care but in a pro game, if you don't have vision you're essentially fucked.
Smoke lets you group up and become invisible. If you're all missing from the map then it's kinda obvious you're either smoked or maybe at roshan (dota 2 boss thingy).
Then there's roshan. Killing that guy gives you the aegis, which is a second life after a few seconds of dying. You put that on a hard carry and he is something to be feared.
The hard carry, A person who is mostly useless without items. You need to farm in the lane or jungle, depending on which hero you picked and how the lanes are sorted.
The jungle. ... etc etc
Dota 2 is pretty fucking deep with a ton of tactics. You could look at it as solely, working up to a single point to allow you to take a team fight where tons of shit happens in a short period of time and you have no idea what just went on.
But it isn't just that.