And if Tobirama was not so physically slow with average reflexes/physical speed and had the super reflexes/physical speed that minato has, the attack would have actually been successful because no matter how fast you are getting to the ready position to attack with the FTG. You have to have a High speed of physical movement and reflexes beyond your opponents otherwise the attack will not work and the FTG gives you no advantage...
I guess Killer Bee has greater reflexes than Madara since he prevented Minato from attacking him. Seriously though Minato isn't shit but a copycat at this point or more like Tobirama is such a plain character that the author makes him the creator of these OP jutsu. Tobirama is just as fast as Minato idk how anyone can be slow using a time space
jutsu(lolwut?) no matter how slow you are you're travelling through fucking dimensions
even fat ass Chouji can be the meatball flash.