Back to your original post. After two years of Googling, I have yet to see any findings of average rises after meals. Unsurprising, given the infinite variety of meals and of individual metabolisms. If 75 g of glucose, swallowed all at once and unaccompanied by fats or proteins (this is the standard test, OGTT), brings most people up to 7.8, then it stands to reason that a genuine meal should bring us lower. On top of that, if you're only eating 50 g of total carbs in an entire day! Any carb besides glucose is going to cause a slower rise in BG. (Comparison: one 12 ounce can of Pepsi has 41 g of carb, all of it high fructose corn syrup. HFCS is 45% glucose, call it 50%; that would make for 20 g of glucose, versus 75 g. BTW, most other brands of cola contain about 35 g of HFCS.)
The lower the peak, and the briefer the period of postmeal increase, the lower the average glucose will be. If the peak is 6.2 or so, you might regain fasting level in an hour, but there's so much individual variation in glucose response curves. You can see the variation by Googling glucose response curve tura; from there select Images. Look for the single image with 12 graphs labeled A through L. The 4 graphs A - D are different glucose response curves. (Tura is the lead author of the study. You can leave his name off and get other search results.)
A lower peak value is probably more important than a shorter postmeal hump, but more than 2 hours is not so good. Tura et al.'s curves show that many people who exceed 7.0 mmol/l need 3 hours. Although we'd like to improve both glucose tolerance (by reducing the postmeal peak) and fasting level, some people have more trouble with one of these.
I have risen to 10.0, but still come back to 4.7 in just two hours. The BG was actually still 10.0 at 75 minutes. Coming down by 5.3 mmol/l in just 45 minutes is great, but peaking at 10.0 is rather bad.
Consider doing more exercise. I brought my A1c from 6.3 to 5.5 by walking alone, without diet changes. (After 10 months, though, it shot up to 6.2, then fell to 5.9. Frustrating.)