Do Obese People really have the same Health Care costs like Regular People?

Websites like http://www.bigfatfacts.com/ imply that fat people have the same health care costs as regular fit people. Well, here are some reasons to consider.

The reason why fat people can have the same health costs like regular fit people is because fat people set the A/C in office buildings to like 65F. Thus, everyone else is freezing in the office and eventually gets a runny nose that leads to a cough and then a cold.

Then, in the Winter, the FAT people set the heater to again 65F cause they have built in fat "insulation" And again, the regular fit people catch a cold again cause it too cold.

So both the summer and the winter the regular people are sick from the office being too cold. But the fat people are fine in regards to office temps, but have other problems like diabetes, heart, back and knee problems cause they weigh too much.