The study published in the British Medical Journal states ""People with diabetes may not simply be a subgroup of patients at high risk of cardiovascular events but a separate entity, with additional factors playing an important part in determining the efficacy of treatment."

 

As always one study isn't necessarily conclusive and certainly not something you'd use to make treatment decisions but if it's relevant to you, you might like to discuss the issue with your Doc next time you pay him or her a visit.