Not sure about Ollie but I split my rating system up as I can not compare a Hyper coaster with a Eurofighter/family coaster.
Saw for me gets a 4 Speed 6 and Rage 8.
As Ollie said when the crap effects are not on the coaster is even worse and not as good as Speed and Rage. The effects help the ride a tiny amount, I can say this as I have been on with and without effects.
Alot of people that are going on Saw rate the lift hill and the drop, but if you have done Eurofighters before you know what to expect so this part no longer bothers me, 1st time on Rage it did.
I still stand by my view once most people have been on Saw they will go back to Inferno and Stealth and say they are better. Cause lets face it they are more thrilling coasters.