budgted values VS Porject baseline values.

hi there...

after completing my plan and baselined it...i started statusing the schedule against my assigned baseline....during collecting field data i noticed that:
 

1. my actual units were always above my baseline units
2. my actual cost were always above my baseline costs.

based on this...in my activity usage profile... what i expected to see is that:

1. the actual units bars are always higher than my the baseline bars..
2. the actual cost bars are always higher than my the baseline bars..

what i saw instead was that:

• my actual bars are some times lesser than the baseline bars (which is something i dont have in my project....in my project the actual are always higher).

after doing some playing with the activity profile i noticed that:

•  comparing the actual bars with the "budgeted bar" gives exactly what i expected..

this brings up the following question:

• what is the difference between the budgeted values and project baseline values.

your help would be highly appreciated.

best regards