I've been trying to work out what "sexual power" means. Eventually it occurred to me that the concept only makes sense in BDSM-like settings where people role-play at different "power levels" (i.e. dom/sub), and maybe you're wondering how that compares to the adult/little relationship...?
I think for most ABDLs, the whole "power issue" doesn't really come into play (or maybe it's more subtle and subconscious). I suppose ABDL play is more explicitly consensual... as in... it's very much focused on what the "little" wants, rather than the "adult". Whereas BDSM play is more overtly focused on what the dom wants (or so I hear).
But, like a Venn diagram, there are areas of small overlap between ABDL-ness and other kinks. People who have a mix of BDSM-ness and ABDL-ness might incorporate the idea of "sexual power" into their play or fantasies...
Does any of that make sense...?!