The 28-year-old Ivorian international has played in the Netherlands, Spain and Germany within the last five seasons and Martinez believes this breadth of experience and his physicality will help him adapt to English football quickly.
He emphasised, however, that it will take time for his squad to understand the forward's style of play, and only then will the club see his true ability.
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"Arouna is a top goalscorer," Martinez told ESPN.
"If anything, we need to develop an understanding of his play and the players around him to get the best out of his ability. He's a powerful player.
"He's ready, he's experienced. He's played in Holland, Germany and Spain already."
Kone missed a clear chance against Fulham on Saturday before scoring a late consolation goal, but Martinez believes that his overall play, showcased the threat that he can pose to opposition.
"It was a real surprise when he missed the one-on-one with [Mark] Schwarzer because he's very clinical in those positions," he added.
"But you can count on Arouna because he's always in the right place and never runs away from the places that as a striker you need to be in to have chances."