Hard to answer really although again I say MARVEL would win this battle because Tony Stark would probably make some sort of Slow motion device that would slow Barry Allen down. Or The Flash could die like Quick Silver :'( :'( :'(
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MARVEL VS DC
Fanfictionwho would win... this is a book where you decide (as the black widow, any fights i am in... well i would win of course :P)
The Flash VS Iron Man
Hard to answer really although again I say MARVEL would win this battle because Tony Stark would probably make some sort of Slow motion device that would slow Barry Allen down. Or The Flash could die like Quick Silver :'( :'( :'(