Minato got this flash is going to use vortex speed don't know what it's called.
AND minato is going to use a resangan.
Then the flash gets own
What are you talking about?This is not a fight it's a race. And Flash would win either way. Flash moves faster then kunai thrown by Minato, which he needs to throw for his space jumping jutsu to work. And in a regular fight Flash would win based on a number of feats he accumulated over the years where he beat faster, more powerful opponents. Minato just can't keep up.
Bruce Wayne, he has fought enemies who are stronger then him on regular basis. Being strong doesn't translate into a win. He is combat smarter, faster, and has higher knowledge in martial arts by a large margin.
I don't like how Batman is portrayed here. As said this was deeply out of character for him, even if he did lose his son. And as for another Robin replacing Damian I just think it's too early for a new character to be introduced and that it is a better idea for Red Robin to fill in, if there is such a big need for a replacement.