Originally Posted by Jesot
With a complementary support/jungle combo, you can counter jungle all you want. The pressure of defending jungle will make 3 solo lanes easier.
Maybe Nunu and Shyv since they can share buffs and tear apart any opponent at level 3.
It's still dangerous and far less consistent compared to the current meta.
Suppose you're on blue team using a double-jungle comp. I have to assume that a double-jungle strategy has to invade one of the enemy buffs on first spawn, but let's look at later in the game when the buffs have respawned. It's time to go get the enemy blue buff.
The enemy team knows that because you're double-jungling, it's important for your team to feed of the spawns in their jungle. They KNOW you're going to be coming for at least their buffs--they know you can't miss these. They'll ward the river to know which one you're coming to. So you're on your way to blue.
But remember, you're on their side of the river. The enemy mid-lane, jungler, ADC, and support, all meet you at your blue. Best case scenario for your team is that your mid and ADC also show up. This is still going to be advantage for the purple team more often than for the blue team. And here are some reasons why...
1) It is easier for purple team to get people to their own blue buff than it is for blue team to get people to enemy blue buff, so purple team has a numerical advantage more often than not.
2) Even in the case where the numbers are even (2v2, 3v3, 4v4), your teammates have to spend more time out of lane to get to the fight. This means they miss more experience and last hits then the enemy teammates that come to assist the fight.
3) Turrets are safety nets, and you're a lot farther from yours than the enemy is from theirs. It is harder for you to secure a kill unless you're able to dive their turret, meanwhile it's harder for you to save yourself because you're too far from your own turrets. This essentially means that even if the number of champions are even, the enemy still has a numerical advantage by counting their turret. Assuming all turrets are up, they have 4 friendly turrets to run to that are all closer than your nearest friendly turret.
There are other factors that make venturing into the enemy jungle dangerous. Now, this isn't to imply that you shouldn't go into the enemy jungle. It's pretty obvious that's not the case. Counter jungling is very important even in the current 1:1:2:jungler meta. But the 1:1:2:jungler meta doesn't RELY on counter jungling. If you did a 1:1:1:2jungler meta, you're RELYING on going into the enemy jungle, and the enemy team KNOWS this.
The jungler is already the lowest on experience, and lowest on gold behind the support. Now granted, moving the support out of bottom lane and into the jungle doesn't change the gold flow. We'll assume that the support still gives the jungler every last hit. But all you've done is boosted the XP the ADC is getting (when he doesn't really need any more) and hampered the XP the jungler gets (when he's already the weakest link in terms of experience).
This puts a LOT of pressure on the double jungle team. They HAVE to invade the enemy jungle regularly in order to keep a high level of experience. They also have to pull of successful ganks regularly to help bolster the experience and gold.
Again, I'm not saying a successful double jungle strategy is worse than the current standard meta. What I'm saying is that the double jungle strategy is less consistent. The current meta is safe and consistent. While the current meta doesn't necessarily do much to really shut out the enemy team (like a double jungle comp could), it also prevents the enemy team from easily shutting out your own team.