Oh good, this thread is a thing.
As an SSF2 back room member, I regret that we don't have nearly enough local tournaments to get accurate data. There's quite a bit of risk in relying on online tournaments, which is what we've been forced to do. So, unfortunately, an accurate tier list in our infant metagame's current state is simply an impossibility.
That's why I feel SSF2 should get its own board here like PM did; it's competitively minded, but it's so obscure at the moment thag its potential is being utterly wasted – it needs a boost.