Wonder Woman can also do this with her D3 but better to parry and get a huge combo.
I find some gaps can be great to exploit and make people who depend on gimmicks or that string re-think their strategy, like Green Lantern b1 and CatWoman's 33b2 staggers.
However some gaps like Robin's 212 are dumb because it beats all mb b3 and backdashes anyways so what's the point?