I went through the precise measuremnts and shaping in great detail in another thread a few months ago (just search for threads on neck profiles, it shoudl be easy to find) so I won't repeat everything here, but the TL;DR is that all of Warmoth's reference points for their neck profiles, fretboard radii and fret wire sizes are wrong. The Standard Thin is nothing like a Fender standard C, the fretwires do not line up with the Dunlop numbers they quote, and for some reason they still list 10" as being the radius of a Gibson fretboard...
For my money the closest mass production matches to the Warmoth Standard Thin are things like ESP and Charvel's thin 'U' necks. (Obviously with some slight differences here and there between specific models and years.) Fender's most common C for the last twenty years is noticeably thicker and more evenly rounded than Warmoth's. I do notice a dramatic difference when going from a Warmoth Standard Thin to a Fender standard C (or even a Squier C, which are a little thinner than the Fender versions). My preference with Warmoth necks, to match a common Fender profile, is to order a '59 and then carefully sand it down a little. Even then it always feels like the Warmoths end up with more 'shoulder' than any Fender. (Except the huge U they used for a little while on the Classic series Teles.) The inability to get a 'normal' C profile is the second-main reason I stopped buying Warmoth necks despite continuing to buy Warmoth bodies.
So if you want a normal Fender C, I say shop elsewhere. If you want something more... metal, shall we say, Warmoth's Standard Thin does a fine job.