There is only one real score and that's the FICO score. Others from TC, CE, or others are FAKOs. All scores, FAKO or FICO, use a proprietary scoring formula to calculate the scores. This is why each score is different. However, FICOs only seem to matter but FAKOs can get you in a ballpark area score-wise. Also, mortgage co's and auto lenders tend to use a different, but similar, scoring method.