Looking at your gear list, the glass is impressive
it [7d] also has much more comprehensive and geeky custom settings....they are super, super-geeky... stuff like "how quickly should the autofocus look for a new target after the active focusing point leaves the current focused subject...
I'm not sure it's appropriate to down-sell a camera based on your obvious neglect to actually learn what all those "super geeky settings" do and why they are there. The setting you listed above ^^^ is a very valuable setting when tracking subjects. Using AI Servo, it's vital to have the correct speed of focus switching so as to not accidentally miss focus because somebody runs in front of your lens.