Scenario:
If Deidara can be defeated by Sasuke without MS, he would be destroyed by Hashirama (Who beat the greatest EMS of all time) with minimal difficulty.
EMS Madara> MS Itachi. So Hashirama again wins, this time with moderate difficulty.
Kakuzu failed to assassinate Hashirama, I'm pretty sure he didn't even come close. So again, Hashirama with low difficulty. At this point, Hashirama has low chakra.
With his low chakra, he will take out Hidan in 1.2 seconds and be out of commision.
First Hokage is dead, 4 Akatsuki dead.
In comes Tobirama. Tobirama quickly disposes of Konan. Low difficulty.
Next up is Kisame. Tobirama and Kisame are both water specialist. So I give the edge to Tobirama, the greatest water user ever. Moderate difficulty.
Tobirama is about done, so he takes out Zetsu with what he has left.
Two Hokage dead, 7 Akatsuki dead.
Hiruzen comes in to take on Nagato. The six paths were defeated by SM Naruto. Hiruzen was give the term God of Shinobi, well Nagato is a self-proclaimed God...I give the edge to Hiruzen and his Will of Fire. Hiruzen is weakened, Tsunade heals him
Two Hokage dead, one injured, 8 Akatsuki dead.
In comes Minato. Minato defeated Tobi once before, granted before the Rinnegan. So the Rinnegan improves Tobi's chances. The best ways to beat Edo revivals is fuinjutsu. Guess what! Thats a specialty of Minatos. He seals them with moderate difficulty. Which leaves real Tobi. Minato dies, Tobi retreats. To try to recover.
Three Hokage dead, one injured, 8 Akatsuki dead, 1 injured.
Tsunade comes in against Sasori. Tsunade is a terrible match up for Sasori due to her status as a medical nin and her Taijutsu skills. Tsunade wins Moderate difficulty.
Tsunade and Hiruzen (Now healed) fight Tobi. Tsunade dies, Hiruzen triumphs.
Hokage win.
You're lucky, I decided to leave out the details of each battle. Or you would have read half of a novel on the subject.