There are always going to be exceptions to the rule.
I believe Green Flash WCIPA is mashed quite high and contains up to 15% crystal malts. That beer is certainly drier on the palate than lets say Dogfish 60 or 90 IPA, which use absolutely no crystal malt and mash lower. I accept that... but it's not too common to compare two beers with vastly different mash temps and cara- malt %, yet the beer on the higher end of the spectrum ends up drier. That's rare as far as IPAs go. I recognize that higher mash temps create more body. That is not my argument. Rather, (in general) the higher the fg, the higher the residual sweetness leftover in the beer.