Cheddar on whole wheat

In The Hidden Truths about Calories Rob Dunn writes,

A new study this year found that in a lab experiment individual humans who ate 600 or 800 calorie portions of whole wheat bread (with nuts and seeds on it) and cheddar cheese actually expended twice as much energy, yes twice, in digesting that food as did individuals who consumed the same quantity of white bread and “processed cheese product.”
...
Each of us gets a different number of calories out of identical foods because of who we are and who our ancestors were.

...your microbes are different than mine which likely matters to digestion....

One of my favorite sandwiches happens to be cheddar (mild or sharp) on whole wheat (oops. Safeway Select Nut And Grain Bread is primarily white flour, but it's got walnuts & sunflower seeds and a bunch of grains) with mayo, sliced tomato & onion, and lettuce. I can't stand processed cheese.