Every dyno is completely different. The numbers that you see on the chart, are the readings for horsepower and torque, at the wheels. Its just that not every dyno is going to give you the exact same numbers. There are lots of factors for that and how they are calculating there numbers. If I had more all wheel drive dynos to choose from, I would try them. However, this is the only all wheel drive dyno in my area. I had one other shop to choose from, however they wanted to take the front driveshaft off. I said absolutely not, so that left me with only one shop to go to. We have more shops with two wheel drive dynos, just not very many all wheel drive dynos to choose from. My friend that use to own a speed shop with a two wheel drive dyno, said for the type of dyno I was on, those numbers are extremely strong and he was very impressed. That made me feel good. If you were to compare my numbers to any other S63 all wheel drive numbers. My numbers are way low compared to other types of dynos out there. That is really all the information I have. I even tried to look for a formula to convert my numbers into per say dyno jet type of figures. I could not find any. I am just trying to get a baseline figure so I have something to compare it to, when I start adding mods. That way I can look at the graph and the numbers. The dyno I was on, is a true all wheel drive dyno. Another words, the front rollers are not connected to the rear rollers. I believe each wheel had an independent roller that was tied into the computer and then gave a reading. The dyno I used, the owner said he could tell that most of the power was going to the rear wheels compared to the front. He had some type of needle meter that was showing him where the power was going. I had read that the AMG S63 is kind of a 30% front and 70% rear on the power delivery. Another words, that is the most power it can send to the front. I hope this helps.