I'll just comment on the Warc player.
Warc has two main staples in her game. Bloodrings and j.b. Throw out bloodrings at various angles to make Nero afraid of jumping in as he pleases at you, and once you instill that fear, control the space in front of you with j.b. Also, try to follow up on air counterhits as the person's falling. 2a5b or 5a5b are usually the easiest ways to do it as Warc.
Also, yes, j.2c is seen as a scrubby move, but if a Nero's just throwing out attacks as he pleases and not even trying to defend, hit him with it and teach the dog how to sit.
I'd comment on oki and corner pressure, but it didn't really happen in your matches. (i only watched the first part of the first video)