Why would you compare the Osprey on 9 with the Sailor on 9? The numbers on adjustable razors are arbitrary and they are just reference points to help you re-use your favourite settings for that particular razor. What would you have done if Shane had used the number 3 to denote the maximum Osprey setting, or the number 100?
I don’t have an Osprey but I would be surprised if the 9 setting was more than a 4 on the Sailor, which I think is as high as anybody would realistically need. 9 is an absurd setting to use on a Sailor and I wouldn’t recommend that to anyone. Even 5 is unnecessary, in my opinion.
I went with 9 because, well, just because I wanted to. I've overclocked the Sailor several times before too. The 9 on the Osprey is actually a fairly decent gap. And like I said, apples vs oranges. Not a good comparison.