An interesting thing here is that nobody is really mentioning how they're measuring, or to where.
I do think that the AMO standard for draw length is useful. Even though I am inconsistent, when I am shooting well and correctly, my draw length is 29" AMO. But measured to the back of the bow, depending on which bow, that might be 27" on some or 30" on others. I'm 6'1" and don't have especially long arms.
For those who don't know of it, the AMO standard is your draw measured from the inside of the arrow nock groove to the belly side of the grip -- the deepest part. Add 1 3/4" and that gives you AMO. This is the length I use to tiller all of my bows.
So basically the "true" draw length should be string to belly side of the grip. For my 29" AMO my "true" draw length is 27 1/4". But for some reason it seems more guys measure to the back of the bow than the belly. :shrug:
I guess standards are there for a reason: To be ignored!