I agree with Gastone but would rather see you go the TDIU route with an "S" award. Difficult to do if you are still working though. If you go the 100% scheduler route, you can still work. It does appear to me, that on the surface, the C&P examiner did you a good job. The exam should put you over the top. Generally, I would guess maybe a 30% award, but that comment the examiner made about how it affects your working ability adds considerably to the DBQ.
It is not a wise move for anyone to try and guess what a rater might do, but you asked. I almost passed on my 2 cents but I could not resist. Nothing to loose considering that you are already at 93%. Who knows, with the bilateral factor added you just might reach 100 + 60 territory anyway. good luck and thanks for your service!
Don't over complicate matters. If your doctor did indeed diagnose you with DM II, and stated that diagnosis in your medical records, for service connection purposes, you are diabetic. Makes no difference how he/she came to that conclusion or what test was or was not preformed.
As far as getting it service connected, that is a different matter and will involve more medical opinions in the form of multiple Nexus letters and an event in service that can be as likely as not identified as the cause of your diabetes.