Howard, your answer is ridiculous, the OP and the section of the form that we are discussing specifically refers to "Present Land Use" not competing properties. If you have not noticed, there is a separate area of the form which defines the residential market in terms of competing properties....it is to be found right above the sales comparison section.
I would say that whatever courses you are referring are just dead wrong.....and it looks like FHA agrees with my view on the subject (from page D-17 of Appendix D of the Valuation Protocol - emphasis added):
Present Land Use %
One-Unit, 2-4 Unit, Multi-Family, Commercial, Other
Estimate each type of land usage in the neighborhood. If there is no land in the neighborhood with one of the designated classifications, enter a “0”. If a portion of the land consists of parks or other unspecified classifications, enter the estimated percentages on the “Other” line and explain in the neighborhood description section.