I have AD... it's pretty good, but one has to be aware that they use compressed samples (not sure if lossless or not, I think I recall them mentioning somewhere it's variable bitrate compression of sorts). Toontrack doesn't do that in Superior (but does for EZD). Ditto BFD - uncompressed samples. Also, AD has limited number of kitpieces, whereas that doesn't seem to be the case in Superior. Also, cannot use your own samples in AD.
Feature-wise, I think Toontrack beats any others because of Tap2Find (AD has something similar but more clunky to use), the way you can compose the whole drum track within the plugin itself, changing the power hand, accent hand, etc... It's just on a whole other level.