Agreed.
If you have a EDO-Madara... 2 Rinnigans, unlimited Chakara, body that negates most damage, that has the Cells of the 1st hokage, has lived almost as long as Kakazu. (and Zetsu army because lets face it character wise they would obey Madara)
vs.
Deidara- Mass bombs
Hidan- Immortal
Kisame Hoshigaki- Tailess Tailed Beast
Kakuzu- Heart Obsessed Immortal
Konan - Paper Woman
Orochimaru - Edo Tesnsi Hokages 1-4
Nagato - Paths of Pain
Sasori- Toxic Puppets
Itachi Uchiha - Genjistu Master
Obito Uchiha- 10 tails Jinkuri, with both Sharingans (assuming the Rinnigan is in Nagato)
No Problem taking out the army of Zetsu's but do they have enough gas in them to finish the job? If no Army then absolutely.
Edo Maddy wasn't prime state.
Didn't have all Rinnegan techs, + had most of his normal Ninjutsu was restricted, had no SM.
Akatsuki wins anyways, we got some Edo Tensei, we got 10 tailed juubi host to.......
Konan gets stomped though.
Susano'o would be enough against Deidara IMO.
Hidan is useless, he would just get pummeled untill hes too exhausted to fight.
The second i see Samehada trying to absorb Maddy's chakra i see it getting Preta Path'd to death.
Kakuzu's things would probably also just get stomped.
Itachi would probably try to get him with Totsuka, maybe it can be Preta Path'd, thats ? and I'm just going to assume that Maddy can dis-spell genjutsu just like Sasuke.
Deidara would just be keeping Maddy on his toes from far range.
Konan? lolwat how is she supposed to do anything.
Sasori's poison could prove to be a major challenge.
Nagato would just probably try to fight him but the only usefull thing he could probably even try to do is use a bunch of summonings.
If Nagato would even try to close range battle then Maddy would outclass him in Taijutsu, and Shinra Tensei isn't going to help all that much, and Maddy can also use it himself.
Orochimaru edo tensei 4 hokages, won't really be doing much more than that and puking about 5000 snakes.
DSM Kabuto edo tensei a shitton more powerfull shinobis to start shitting on Maddy.
Now, over to Madara.
Anyone to even try to engage him in taijutsu would get their asses handed to them, either by beating the shit out of them or shoving big black rods into your body. Only a few people could keep up with him or defeat him in Taijutsu (If they fight smarter) BM Minato, Tobirama,DSM Kabuto and obviously Obito.
Not to mention he has all 6 paths of pain, Preta Path, Human Path and Shinra Tensei are going to help enormously, all ninjutsu would be useless, probably so would explosions.
Wood clones, he could probably just make a ton and start fighting everyone 1v1, even if its taijutsu they can all use human path, even without it they would outclass anyone, plus he has shared rinnegan vision.
PS, can be Preta Path'd
Susano'o v3, even if all the clones use this i'm sure they can all hold their own against it and defeat it, some probably can't, maybe some can.
Large scale fire jutsus- Easily countered by the enemies.
Wood Style - I don't know what to say about this really.
So much more to say but i don't feel like it, i'll just sum up the major factors that would actually be usefull.
Akatsuki+Edo's
Giant team
Wood Style
Good analyzing skills
Numerous far range fighters.
FTG
Juubi Jin
Preta Path
That's about it that's really going to actually help out, Genjutsu most likely wont work, nor would any regular Ninjutsu.
Madara
6 paths of pain (most of these will be usefull for him, unlike Pain)
Wood Style
Sage Mode
Sensing
If no one other than Obito engages in QCQ then team Akatsuki takes this easily.
Simply the fact that they have a bunch of immortal people, people who absorb ninjutsu and about a team of 20+ exceptionally talented ninjas leads to Madara's loss.