Apparently Baras had 2 duels with Satele Shan, the first being very brief, and the second being quite a bit longer. They stalemated in both of these duels, which is impressive to an extent. Still doesn't beat Obi-Wan stalemating Maul multiple times though. But Baras still holds an advantage with his force abilities.
Originally posted by XSUPREMEXSKILLZ
He doesn't. But the lightning Obi-Wan blocked was when Dooku wasn't even trying. When he does try, it has been shown to be much stronger. Baras's lightning has easily subdued a powerful sith lord (darth Angral) and gave the wrath a tough time.
I took it as him noticing, "Eh, lightning's not going to work here. It's saber time!"