Discrepancy between calories results by FitBitFlex and MyFitnessPal

[GoldaT]

Why is there a discrepancy in calories results between those calculated by FitBitFlex and MyFitnessPal???  It seems, in fact, that FitBitFlex calories results are generally higher than those of MyFitnessPal --- the difference between the two sets of results tends to be quite large and therefore confusing as well as sometimes rather daunting.

[SteveH]

Do you know whether MyFitnessPal includes the BMR calories in its total like fitbit?

(BMR calories are explained here: http://help.fitbit.com/articles/en_US/Help_article/How-does-Fitbit-know-how-many-calories-I-ve-burne... )