No it is not.
Tabgle sugar is plain sugar.
Honey consist of about 10% water.
So when adding honey to raise brix level you can generally add about 10% more honey as plain sugar to get to the same level.
The calculation is in fact a bit more difficult, however explaining and calculating that in cups and pounds is really hell (please move over to the far easier metric system....). So adjusting by adding 10% is the easiest way.
Luc