The thing is, the RX 480 costs less as a single and can be CFX'd for essentially the price of an GTX 1070, providing better performance in most all benchmarks.
While I agree with the point you're
trying to make, I think this is a pretty bad argument for the RX 480, honestly. The price is $50 less. That's not much at all. Literally the price of an average hard drive. If you're on that tight of a budget, then yeah, get the 480, for sure.
The whole CF argument annoys me.
So many games have either no support for CF/SLI or have the bare minimum, not to mention even ones that it does
"work" with, are a bit sketch sometimes. Yes, CF 480's ~= GTX 1070, but like the repeatedly touted saying has been, a single faster card is always better than two slower cards. That will stay true until CF/SLI configurations are honored and taken into consideration during game development. We're getting closer and closer, but we aren't there yet.
I do agree though, that it's a bit sad that the GTX 1060 isn't SLI-capable, as I hate seemingly unnecessary hampering of consumer options.