In MvC, most special moves normally do not cause soft knockdown. If they did, then you'd be able to catch airborne fighters in infinites, especially through the use of an anti-air like Mach Tornado.
Although, if you want me to increase the hitstun on moves like Drill Stab instead of applying soft knockdown, that's fair play for me.
Hm.... Eh, the more I'm playing as him, the more I'm getting used to it. I might need to do more fights. But so far, I've been finding out little things with him. I currently have a video of him uploading. (Though I'm trying to at the moment decide which match of these two is better....)
Edit: Alright, I decided to scrap the ones I had, and decided to make a completely new one. I'll just put it in a spoiler tag. Just so it doesn't cause unneeded clutter in the topic.
Spoiler, click to toggle visibilty