[FImageComparisonResult](API\Developer\ScreenShotComparisonTools\FImageComparisonResult) Compare ( const [FComparableImage](API\Developer\ScreenShotComparisonTools\FComparableImage) * ImageA, const [FComparableImage](API\Developer\ScreenShotComparisonTools\FComparableImage) * ImageB, [FImageTolerance](API\Developer\ScreenShotComparisonTools\FImageTolerance) Tolerance, const [FString](API\Runtime\Core\Containers\FString) & OutDeltaPath )