I don't think you totally understand the concept, or the process:
It is very, very, seldom that we have a "good" Comp, and then it isn't going to be 5 or 6.
Even in a "cookie cutter" development, there are differnces in the properties; size, 1 or 2 story, center or corner lot, etc.
And then it has to be within a mile and sold within the last six months.
A Realtor or Appraiser, uses what is given to them, and then makes adjustments to the values, to make the houses comparable.
If you don't know the details, the upgrades that have been done and the repirs made; you can't possibly work with COMPs.
You don't know what you're doing.