The numbers work out different than the calculations from the charts in the PP book. Is fitday.com reasonably accurate?

According to my breafast calculations, I had
17.86 P and 5.27 C

Fitday caculates it at
26P 12 C

Fitday found carbs from bacon and swiss cheese that I had not accounted for and protein in cauliflower which I had not accounted for, plus more in the swiss cheese

Wondering because it could be a really easy way to keep track of daily meals.

*LOL* I love the new eating, I hate the new math.