Hey did you guys realise this?

In episode 71 the third hokage HAD to touch the tree in order to do his summoning no jutsu.

Remember in ep 56 naruto summoned gamabunta while falling from the cliff, and in ep 69 ororchimaru just clapped his hands as his last move to summon the past hokages, and again in ep 69 kakashi summoned pakkun by touching the ground.

Personally i was thinking the dog summoning by kakashi, frog summoning by naruto, and the monkey summoning by the third hokage was pretty much the same jutsu(maybe some different seals depending on the animal) coz they have to use some of their own blood to summon the animal. Naruto managed to summon gamabunta without touching the ground. But the third Hokage had to summon by 'touching' the tree. I find this summoning very inconsistent.

Well what do you guys think?