since they both have the WIN-T up-grade. (photo - 10-2014) I'd conjecture that the CIP's are ontop of the extra armor a "double v-hull" armor package comes with. It looks to push the front bumper a bit more forward than - without.
I have seen differing bolt patters on the frontal lower "diamond-ish" shaped armor panels, that helped distinguish 'single' v.s. 'Double "v" ' . . .(( but my knowledge is web based! ))
i don't know if this matters or not but I found a pretty simple way to make the front cip panels...afv clubs strykers come with an extra sprue and on it is a front mount for the tow bar on the mgs strykers...I used this with the front details sanded off and a Tamiya cip panel for the hood of their hmmwvs...little bit of cutting, gluing, and sanding and mounted on the front mount and it looks the part...if I can figure out how to post photos now ill upload one soon