Sidelanes are going to do less damage to jungle camps. This means that AoE junglers are going to have an advantage in being able to clear wolves (or wraiths, in the case of maokai) before golem spawns, while single target junglers wont be able to do so.
Furthermore, AoE junglers will always have faster clears for small camps, which means that they are going to be able to farm and counterjungle more effectively. Since the jungle will be worth gold again, this farm advantage will be able to transition into teamfight strength, albeit at the cost of lane ganks.