Wow, that's really strange. I have three kinds of whole wheat flour in my pantry and they are all consistent with the value of the white for the same serving size
Maybe next time you are at the store you could check the different brands to see if the information is different and go with the lower. Mine are King Arthur (white whole wheat white), Hodgson Mill (organic whole wheat) and 365 Organic (whole wheat pastry flour). I hope you find something; twice the calories stinks! For the nutrition, a few more calories are worth it, but double is pretty significant.