You have things a bit mixed up. I am only talking about the SCA, that is only getting to the value conclusion presented by the SCA. Reconciliation has to do with reconciling the value conclusions from the SCA, CA and IA. This VERY BASIC appraisal theory.
Given that you are one of the more talented of the appraisers on this forum, well, you are smart enough to know what I think about it all. "Good Grief!"
As to your so-called "reconciliation among comparables," USPAP does not say anything about reconciling values between comparables, only the quality and quantity of data between them: For example, it doesn't make sense to compare comps A and B, if. A has a GLA and B doesn't - at least you need to figure a way around that, such as maybe sneaking into property B and doing building measurements, deducting the estimated size of the garage, or calculating the dimensions from an aerial photo.