No doubt it will be faster, but the sound and visceral feel will not be the same, nor will the freely revving throttle response climb and fall as a result of turbo spooling resistance. The looks are not as good either compared to the 458, imo. The 458 is the most beautifully designed modern era Ferrari...again imho.
Most defiantly there are differences and in reading your response it really does come down to a personal preference but you should once you have logged in some hours take one for a drive - what track do you go too. Do you go often?
I just came back from driving a Lamborghini Aventador - that was a blast - what a car