ok.but under natural circumstances where kabuto just meet's an enemy and ha's no strong edo's he would loose.edo's like 7 sword shinobi man and asuma,dan will be no problems to strong opponent's.the only edo's who actually did anything were muu and 2nd muzukage excluding madara.other' were taken care of without too many problem's.
Under 'natural' circmstances minato might loose because they didn't have time to pack kunai. Yet he always has kunai packed so the prep is irrelevant. The same goes for Kabuto, he has strong Edo tensei prepped, thats that.
So your honestly saying if Kabuto clapped his hands together and the stongest generation of 7 swordsman, asuma and dan popped out the it would make no difference in a fight? These are all strong opponents that can't be killed. At the very least they serve as excellent distraction tools for Kabuto who has demonstrated the ability to destroy someone if they drop their gaurd for an instant (think of when he chopped Itachi in half).
Also the Edo's killed countless alliance members - they weren't taken care of 'no fuss'. Serious effort and planning went into sealing Asuma and Zabuza alone.
see exactly my point.and kabuto cant do grave digging and dna collecting evry day.
Again this is completely irrelevant since he already has Edo's prepped. If he want Muu he doesn't have to go the the hidden stone first then grave rob. He already has Muu prepped and simply has to clap his hands together - there is no prep.
Without Orochimaru's chakra he is nothing. With Orochimaru's chakra is he a bitch who uses a cowards jutsu. Hiding behind other shinobis powers, not his own. Personal summons are not part of personal strength, just like Gedo Mazo is not Obitos power. If you argue he should be number 1 because of his edo army, you're wrong. Gedo Mazo>Edo Army
Just because you don't like the character doesn't mean that they aren't powerful. Edo Tensei is a jutsu just like any other jutsu in any other ninja's skill set. Sure summoning say Muu doesn't mean that Kabuto himself has dust release jutsu - but it does mean that he has the technique available to use if he wants to.
Also unless Gedo Mazo uses the dragon jutsu then it can't do anything to the Edo army - since they will revive. Gedo Mazo can't use the dragon jutsu unless someone else collaborates with it. So honestly I don't see where you think gedo mazo > edo army.