i am only 2 days into the AR, own a OT as well … at first sight, the OT is much more versatile when it comes to mangling and handling samples … off course the AR will get some more updates and such … but even Dataline said on the last sonic state video, that the AR is not a sampler, the OT is…
an elektron is just the beginning,… do what i did, give your head a rest, just buy it all, end of story 
…that being said, i havent touched the sample options of the AR so far … your question might just be 1 or 2 month tooooo early, just my thought on first sight