It's not plot, Minato is also an excellent sensor, the moment he felt A's chakra shift, he knew to avoid. This isn't stated in the specific manga chapter, but its implied xdMinato teleports, he is not faster than the raikage. Minato's ability to dodge the raikages punch was even plot because he does not have the sharingan then how did he see the raikage coming at him?
So combine Sensory, with the quickest reaction time of any ninja without a hax (sharingan), plus FTG and extremely high intellect; that pretty much proves he's the fastest and best dodger in the Narutoverse.
Also, and this isn't directed at you lol, you can make an argument about tobi, and how he only needs to "de-materialize" and he has dodged the attack. Well as stated by the manga, his jutsu is only good for 5 minutes; after that, whatever attack comes, he is gonna have to dodge with just his sharingan and base speed (I don't like using "base" in anything, but it applies here)
As with Minato, he has seals placed all around konaha, therefore if he didn't have time to throw his kunai's (which has never happened) he simply teleports back to his safe spot.