Is the Credit Score Treated the Same for all Kinds of Loans?

Generally, no. A mortgage loan, by virtue of its size and long repayment terms, will usually require you to have a higher score to qualify for a favorable rate than, for example, a credit card. But the nature of the loan may also play a role. For instance, a borrower with a low credit score applying for a 15 year mortgage with a 25% down payment may qualify for a better rate than someone applying for a one year adjustable rate mortgage. Mortgage lenders will typically look at all the risks involved before deciding on a rate. A lender whose loan portfolio has a high concentration of risky clients may require you to have a higher score to qualify for a prime interest rate than a lender with relatively lower risk in its portfolio. So it's possible that given a particular score, you might get a prime rate with one lender, and get a less favorable rate with another.