I said Malgus is on the same general level as Dooku not that he's flat out superior. Also, the capacity to build a flawless (ie perfect) form is naturally connected with innate skill. A flawless form can't be exploited either.
He was "struck down" by a combinee formed by the HoT (the same who tanked Vitiate's TK on a DS nexus), the Barsen'thor, his peer, and two of the most versatile and dangerous non force sensitives in the galaxy. AotC shows that, under certain circuntances, prepared non force sensitives can give trouble even to the most talented force user. So, a very significant handicap.
Note that in the original flashpoint, when Malgus HP reached 20%, he becomes invincible and you had to syncronize ability spam on him to throw him off the plataform. The process, however, due to the game engine, wasn't as smooth as one would like, so their changed it to a "normal" way of defeating him.
He "defeated" with the help of three people. Your inequality doesn't follow.
Jeeeesus. He's praising Malgus performance as a warrior, not as a general. His battlefield feats are naturally connected to the previous sentence. Concordance, please.
Can Ventress defeat Dooku? No. Can Ventress defeat Agen Kolar, Plo Koon, Kit Fisto and Saeese Tin at the same time? No. These four Jedi can, collectively, accomplish what a more formidable force user can do alone. Your logic is debunked again.
Anakin is the Chosen One, his raw skills, regarding anything related to the Force are greater than any non haxed Force user ever. General combative ability, on the other hand, depends on a myriad of factors such as experience and mentality as well. Note that when Sidious compiled the Book of Sith, three years after, RotS, Vader was still alive and capable to build his own legacy so he was most likely excluded from the quote. Fact supported by his reminiscenses of Anakin as "the greates Jedi killer of all time" in Dark Empire.
It refers to Malgus as a "warrior", not as a commander or general. Other points adressed above.