I received Aeolus Pro saddle for testing and would like to get your opinion about its position in comparision to S-Works Toupe saddle. I was fitted with S-Works Toupe and marked inclination as well as horizonal position. Since a scale on Bontrager starts in a different point, to get the reference I aligned bottoms of the saddled and marked the same place on Aeolus rail as it was on Toupe.

The marks provided by the manufacturer aren't for comparing to another saddle. They are just so you have an idea if and how far you moved the saddle when you adjust it after riding it for a while and decide that something has to change.

Thank you, however I'd like to take an advantage of having KOPS set for Toupe.

I'm not a fan of KOP's. But to me I'd think that you'd just figure out where you sit on the previous saddle. Measure from there to the handle bars. Then set where you think you are going to sit on the new saddle to the same distance from the handlebars.

Tilt will be something you eyeball the first time. Adjust after you've tried it out.

Don't forget to check saddle height to the pedal or BB before swapping. I wouldn't expect every saddle to put the rails the same distance from the top of the saddle.

Put the saddles against each other, top to top. Match the outside curves as near as possible to approximately match seating positions.
Any difference in nose position allow for when you set your set back.

The Aeolus is a short-nose saddle so you need to set the nose back further than the Toupe. Also, the manufacturer says to angle it nose-down 2 degrees. I personally found 3 degrees nose down was the sweet spot for me. Good luck.

Also not a fan of KOPS, but it's a good starting point. Thing to do is to measure where you were w/r to KOPS on the old saddle, then establish that same relationship between knee and pedal on the new saddle. There's no reason to believe that one's butt will be in the same location on two different saddles, ether for and aft or height. For height, I always measure with my leg, heel on pedal, unless it's the same saddle on different bikes, then I'll use a tape.

-3 at the tip of the nose?