What are you trying to discover or demonstrate? Both could eat a steak and green salad with olive oil dressing and neither should show much difference between before and after meal blood sugar levels. But if both parties ate sticky toffee pudding and a jam doughnut, the diabetic's sugar reading would shoot up very high and probably only come down very slowly, after many hours, and may require medication, whereas the non-diabetic's may go up a bit, initially, but would return to normal, probably within an hour.
Sally