Ok, here's what I found out. Under the 2009 S-Genius Manual, it specifically mentioned that, "The SAG should be 12.5mm on the shock piston, which means approx. 25% SAG in FULL TRAVEL POSITION." That being said, the 12.5mm is the 25% SAG we need to have on this bike. They didnt use 150mm-25% but rather used, 100mm-25%=12.5mm. Idk why 100mm when this bike specs is 150mm of travel in the rear. Anyway, with the 12.5mm-13mm sag, the eye-to-eye is at about a couple of mm shy of 180mm.
165mm eye-to-eye distance with no SAG
180mm is the sag-boy. This is where your sag should be if using 25%SAG.
When I was trying to get at least 25mm sag, thinking that this number is 20-25% sag, the bike had to be pumped with air psi spec at 88 lbs but my weight geared up is at 145 lbs. Also, with 88lbs i was able to get 23-25mm but when LO feature is being used, the bike starts to sag down on its own. Almost feels like its leaking air. Who knows. I dont like that 25mm sag because i lost my LO feature and the rear end is way too low.
On my second run, i pumped up the shock for 132lbs rider (-16bar/+20bar) and i was able to get a 17mm SAG. With this, the bike passed the sag-boy by 2mm but it felt slightly smoother than 143lbs rider weight spec. Also the air doesnt leak and my LO feature came back. I guess with the 88lbs rider weight, theres just not enough air and I'm just too heavy for this spec.
The bottom line is that, it doesnt matter what your weight is. Just make sure you get 12-15mm sag to get that 25% sag as per the manual stated. Just adjust the pressure to make sure that the eye-to-eye distance is at 180mm or go for more by adding 5% more on the sag (30%).