Why is the unit code failing when results are the same?

I have to compare 2 xmls for unit testing and if they match I have to pass the test. I used the XMLDiff patch technique and stored the result into a boolean "bIdentical". After that did the following:

        string result="";
        if(bIdentical)
            result="true";
        else
            result="false";
        object expectedFinal = "true";
        object actualFinal = result;
        Assert.AreEqual(expectedFinal, actualFinal);
        Assert.Inconclusive("Verify the correctness of this test method.");

Why is this failing though expectedEqual is the same as actualFinal? I debugged the code and saw both have the same string "true". Still its executing the line Assert.Inconclusive and test fails. please advice.