For Train man the strike happening in the front of the train happening first. For Platform both strikes happen simultaneously.
Train Man knows that the strike in front of the train happened first because from his perspective he is standing still and the light from both strikes traveled the same distance at the same speed and the light from the strike in front of the train hit his eyes first.
Platform man knows that they happened simultaneously. He knows this because in his frame he is standing still and the light from both strikes traveled the same distance at the same speed and hit his eyes at exactly the same moment