Oh that part, I was looking at the page before that where Obito bypassed their attacks. But again, Minato and Tobirama out sped Obito with FTG themselves. Minato FTG Naruto and Sasuke away before Obito could kill them, FTG duoed with Tobirama. Tobirama FTG Obito's orb bomb back at him before it exploded. And again,
Edo tenseis are not at full power, their over all stats are lower than when they are alive so saying Madara was able to counter them isn't saying they're slower than him especially when Madara said he is use to fighting FTG users. A even said he can attack Minato upon knowing where he would FTG to even though A is slower. Madara knew Tobirama's mark was on the Kunia and would use it
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and
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. Madara said Tobirama was once hailed as the fastest but that he couldn't bring out his true power (Edo's are weaker than when they are alive, manga fact).
Minato's kunai was at Madara's feet, knowing that Minato would attack wouldn't be hard for someone experienced for him. Madara said Sasuke couldn't use his s/t jutsu on him since he was out of range, but Sasuke can still move himself from point A to pint B in his range so he can move himself closer to Madara. Madara wasn't going at full speed since his full speed would be like how he blitz Naruto and Sai who were looking at Madara while it shows Kakashi turn and look at Madara with his Sharingan eye. Itachi how has better speed than Sasuke also had to pin Sasuke down to take out his eye, genjutsu or not, they would not want to damage the eye so Madara isn't going to be going full speed as he try to get the eye, the force that will come from his speed would take off Kakashi's head if that was the case. Kakashi head turns as Madara takes the eye, had Madara be going at full speed, Kakashi would have a broken neck or it would be ripped off his head since he was stationary with not warning to prepare himself
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.
As you can see here, Madara is stationary while Sasuke is moving
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. You see Madara turning to Sasuke so yes he had time to react but he chose not too. Like Kakashi and Obito could see through each other's eyes, Madara most likely was looking through the one Obito had since he didn't defend himself from Sasuke but warped and as he warped he automatically threw his blade at Sakura