Not really, you can make any gauge wire do anything you want.
Throat hit is a thump in the back of your throat, and really has nothing to do with how hot or how harsh the hit is.
Heat is the result of coil temperature, and a vape can be to hot even with no throat hit.
Harshness can be the result of the vape being to dry, and/or to much PG in the mix.
The thermodynamics of every type atomizer is different, so there is no set formula for wire gauge. Some PVs can even give the coil a little extra help to get up to temperature. There are just to many variables for there to be any one correct answer.
Some simply say turn the power up/down to correct the TH, but in reality wattage has very little to do with actual throat hit. It just changes the temperature of the hit.
add:
I'm going to take a wild stab, and guess that you are using a PV that does not have "step down", and/or a PV that measure "mean" wattage, and what you are rally dealing with is to much heat, not to much TH.