These lists are far too influenced by the latest set of tournament results, which is silly because of (1) how varied results have been and (2) the humongous role of player skill in determining results. Number of top 5 lists with batgirl increased exponentially after sonic fox won FR.
On batgirl's cartwheel - maybe I'm missing something, but I think the value is greatly overstated. Yes it's annoying to guess as a defender, but the trade off is actually in your favor. If you get hit you take 10% if you guess right, all versions are punishable for much more than that.
Her other footsie tools seem to have problems too. They are easier slow or punishable for more than the damage they deal. What am I missing?