I agree with you, but like i said earlier in the case of Aguero altough his physics are the one of SS, he's truly a CF, been playing there for a while, and accustomed to that role, he's quite the finisher too, I can see Jovetic making the transition too after a while, the best comparaison i could've think of Jovetivc right now is Rooney, Both will drop deep, open up the play and set up attacks and score between 15 and 20 goals a season.
I saw Montenegro's game against england where Vuci played as CF and Jovetic as LW, and i'd rather play Jojo as CF if he's our only purchase in attack, because Mirko is still more creative and Jojo will be more active in the final third.