You're confusing swordsmanship for overall power. in pure "I know more about who to weild a weapon better" Tyranus all the way. However if you read the RotJ book you realize he's really nothing more than a bumbling idiot with no true Sith power.
First, I'd like to say please don't bring old threads back. Now, onto the topic, do you think a bumbling idiot with no true Sith power could use Sith Lightning to fling someone across a hangar, or throw a Jedi Master away into a rail?
The source of these quotes comes from my stock pile of nerdisms. If I see a magazine with the word Star Wars on it I buy it no questions asked. You'd be really surprised during all the interviews how often Lucas contradicts himself.
While this may be true, do you trust some nerds like SuperShadow over Lucas himself?
When you really look into Sideous he wan't much. He's natural force ability was limited and his swordsmanship was second rate. However he was more cunning than the others which is why he gets the rank as ultimate badass of the movies. Why Dooku gets third not second is that he wasn't a Sith truly. He didn't have the conning that Palpatine had or the RAge that Maul had, Vader had both (to a lower degree obviously). Maul I give forth because he was a fricken moron. That's my reasoning. If you disagree please give your reasoning.
Yes and no. Yes that Sidious wasn't too great in combat, but his cunning was all but great. No that Dooku wasn't a true Sith and that he had no cunning. Here are some quotes by him:
"Join me, and together we shall destroy the Sith!" Do you think he really was going to stop the Sith? He was obviously using Obi-Wan to help him destroy Sidious, then become the Sith himself.
"Master Kenobi, I'm disappointed. Yoda holds you on such high esteem." If that isn't a taunt, then I don't know what is.
"Drop your swords. We don't want to cause a mess in front of the Chancellor, do we?" Confidence.
Now, these quotes contain these things: Sinister, taunts, confidence, calm, power-hungry. These ARE the traits of a Sith.