No, at least not yet. He decided after his virtual simulation that he wasn't yet ready to take over the world or kill Lois.
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"Louis" is NOT a character on Family Guy therefore this question cannot be answered.
No, Brian did indeed kill the evil sadistic clone but the 'Thriller' inspired ending was to indicate that there is still a little bit of evil in Stewie and he hasn't gone soft.
he asked a question only the real stewie will know
That would be Stewie Griffin: The Untold Story
if you don't want spoilers don't scroll down. . . . . . . . . . . . . . . . . . . . . . . . first stewie kills Lois and then it doubles up with the 101th episode where Lois comes back from the dead and trys to kill stewie then stewie becomes the ruler of the world and then Lois goes all sexy commando and has a f*****g awsome fight with stewie ending up kicking the s**t out of him then it turns out it was all imagination and stewie says "if that's what happens if i were to kill Lois then i better not" and then credits roll
Brian tell Stewie the truth when they are stuck in the bank vault in the episode Brian & Stewie