Define "a lot" . They have more, whether you want it or will use it is another matter. The load would be lighter on the vtf3s is the way I think about it. Looks by the numbers the vtf3 has a 3-6 dB advantage in general as well as more extension. Amp power is relevant to compare if the sensitivity of the system is the same, otherwise isn't particularly useful (and keep in mind it takes a doubling of power to gain merely 3dB spl).