Look at the scan(can't post it) of when he charged up to attack Naruto. His hair spiked up. Bee then noted that Raikage was at his fastest. This means his attack on Naruto was definitely V2. Naruto dodged it and then Raikage noted that the boy was the second person to do this meaning the first person also dodged his V2 punch. Meaning Minato dodged his V2 punch.
Also.....headband man. Everone has made it abundantly clear.