Hello cuberdrift,it's hard to answer that question, which recording is most virtuosic. However, i don't believe this recording is fast-forwarded. Oscar Peterson famously stopped playing the piano a while after listening to one of his recordings... His playing is still unbelievable even for today's standards.I think Tatum's tea for two is in A flat, in that case, your recording has even been slowed down a bit, as it is a semitone deeper!
I prefer the recordings he made at a private party at Heindorf's house in the mid-fifties. They were issued on a Verve two CD set a few years ago. They were made with a tape recorder and have conversation and various background noises. However, there seems to be something about them which is lacking in his professional recordings, more musicianship and less dexterity perhaps. Well worth a listen.