Leaving out very important info used to determine recoverable, but only talking about the factors that make it look good to the uninformed seems quite telling to me.
Perosity? Permability?
Compare the Green River Shale with the Eagle Ford Formation and only talk about thickness would be very misleading.
Considering the hostility of the oil producing states to Israel they have other issues that make the costs issues involved in oil extraction less of an determining factor for them then most Nations.