Fitbit does not adjust down, what do you listen to

sandeefr

Ok so the fitbit will only adjust your exercise calories up if you burned more but not down if you burned less so you never really know what you are burning for a specific exercise unless its more. Also both sites are always different in how many calories it tells you to eat even with the goals the same. I go more by mfp because it does not tell me to eat as much in spite of the fact if gives me more calories to eat than fitbit. What are you guys doing?