Honestly, WaveDashBlock method is better all around. You need to have a longer walk than what Reo is doing. She takes a big step when she starts her walk and you want about half of that step, like in the top video. In the second video, he is doing it a little too fast and it's slowing her down. The top video shows her gaining more ground on Goro because he's actually doing it slower. the block method lets you press back immediately after releasing block, so if you can block for only 1 frame, that would be ideal then hold back for 5-6 frames(?) then block for a frame, repeat.