Yea, barracks obviously = inhibitors. But ancient creeps, runes, and roshan are very different than dragon, buffs, and baron.
Heres what I think and correct me if I am wrong on anything.
Red buff and blue buff in league are really like the ancient(maybe large) camps in dota. There is a red and blue buff on in both teams jungle. They cannot be killed at lvl one without 2 allies and an ability smite(long cooldown damage to minions) Runes can simply be picked up and are not really points of contest, especially as there is one on the map every 2 min. Blue and red buff have a 5 min respawn and so especially at around 7 min in the game, stealing away the enemy teams red or blue is a really strong tactic(having two blue buffs on your team and none on the other is huge)
Roshan is VERY different from baron. How easy is roshan to kill?(I actually am not sure of this) Roshan drops aegis, one hero, one use ressurection. This has some impact but the hero with it can still be caught alone/focused, or the enemy team can force it out and disengage. Main point being it has no map effect, it helps the team but mainly one hero. After being killed three times it also drops cheese(So how often does this come into play) cheese is again one champion one use sorta a super potion. I see how a team with both can be very strong in a team fight but again aside from a single teamfight these items don't do much.
Baron is killed once or twice a game, I have rarely seen baron killed 4 times in my 3000 games played. So for reference, baron can almost never be solo'd by any champion. Depending on team comps during a normal game an attempt to get baron will leave an entire team around half heath which is why fighting while a team is trying to take baron is so good. The buff baron gives is team wide, at least all living teammates. It gives ad and ap which makes everyone on the team stronger. Once a team has baron buff the enemy team can almost never win a team fight and are forced to hide under towers. On top of that baron gives a health and mana regen buff to the entire team. This allows a team to group up and siege a tower, they can just hit it a few times each minion wave comes and heal up any damage they take due to the buff.
So baron, buffs, and dragon are a bit more important and game changing then in dota. This is why I believe individual skill has a greater effect in dota.