I think why MX13 and MX11 are given 5%, there are reasons. (Im also MX11 mid career)

Most people enter at these grades.

Freshies at MX13, mid-careers at MX11 usually unless headhunted or someone recommends/vouches to bring you in.

Hence, it's one of the main reasons, or rather, the only reason they shortchanged these 2 grades.

Im doing more than some MX11a and yet getting this shiet increment. Makes me feel utterly sick.

This is also in exchange for freedom and not being able to do business/sidelines. Feel totally being screwed by the govt