I always measure to the throat plus 1-3/4". There are too many differently shaped risers to get an accurate number at the end of the riser.
After all is said and done, you draw what you draw, regardless of the number.

In the end it is still just a number. The important stuff is if you are hitting where you are aiming and are you not causing injury to yourself.  A friend of mine had a 30" draw, except even though tightly anchored, he released at 28".  I tried to tell him, but when he released at 30" his accuracy was gone.  He needed to be at 28" to aim right.  It was his eye position.  I have seen collapsing shoulders be the cause of draw loss,  if your bow shoulder collapses and then you still go for your draw by over working the drawing shoulder, you could be hurting both shoulders.