a bit confused; truecredit was lower than myFICO score?

 

i check my credit a few days ago on it and found that i was off by 50 points the last time I checked with NOTHING different in my report.  

 

If this is the case (i.e. TC lower than FICO) I feel a bit relieved but frustrated at the same time.

 

How do Lenders obtain FICO scores?  anyone??