Lucas likes to echo his movies....similar scenes, similar dialogue, etc. I wouldn't put it past him to do the "flip over cut" move again to remind us that's how Obi-Wan beat Maul. Cept this time, Anakin gets shafted. How else would Obi-Wan know he was going to jump over him when Anakin could've easily just stepped onto the ground away from the lava?
That had to be the most foolish jump ever. Obi-Wan can force jump all the way up to another ledge in TPM and Anakin can't execute a higher flip over? At least Obi-wan didn't slice him in half.