All of the EVGA chips comes from the same pile, and none of them have been binned. This means that the lowest-model 1070 is as likely to perform and overclock well as the highest model. With the ACX3 vanilla, SC, FTW, Classified... you aren't paying for higher performance chips, because all of them will out-perform the listed specs on the boxes of any of them, and they have to, because none of them have been sorted for performance. GPU-boost is going to take all of them beyond the speed listed on the box of the Classified model.
What people pay for in the higher-tier models are like dual BIOS (for overclocking), RGB lighting, more power phases (again, for overclocking), extra power deliver (I'm guessing it's just a psychological thing, since the 10XX series doesn't really need it. But it lets people feel they can overclock more), etc.
Raw, out of the box, all EVGA 10XX series cards are the same, in that their chips are all randomly taken from the same pile, and the difference in their performances come down to the silicon lottery.