3-4-9 and 3-4-10

[ChuckElias]

Can anybody explain to me the rationale for the difference in these two rules that deal with uniforms?

3-4-9 says that if the uniform has a logo (star, halo, etc) the number must be below the team name

3-4-10 says that if the uniform uses a "tail" after the team name, the number must be above the team name.

First of all, who cares if the number is above or below the team name?

Second of all, if you do care where the number is, why is the placement different in the two rules?