Wrong. AOTC Dooku uses push on Anakin. He also pulls the ceiling down trying to cruch Yoda, as well as throwing wall fixtures at him. ROTS Dooku uses choke and push on Obi-Wan. Sidious later throws entire balconies (for lack of being able to come up w/ the right word...) at Yoda. Yoda threw one back. There was a lot of pushing in all the ROTS Duels. NOW, all of these battles used lightning and/or jump, but the way you worded your post that doesn't disqualify any of them. Also if you meant that it was the only duel that ONLY uses a Force power other than lightning, speed or jump you are wrong again. Luke uses jump to get out of the carbon freezing hole.