Rear damper 855, which / watch out for what / why?!

Moin Herd! So… yesterday evening still gumbled until late… Does a new rear flap damper come in. I found ridicule cheap, shouldn’t I because they are k**ke… Here again zigzack74 perfoooorrmnz, or so… then I found a few Monroe, for an absolutely awesome course. (Flo please still!) A few hours later I had to deal with pulling force and stroke and thrust force and length over everything at once?!!! WTF is that?! Hub: 75 mm Spreading force: 1500 N Length over everything: 275 mm is that good? or rather, Hub: 75 mm Spreading force: 1600 N Length over everything: 275 mm Case diameter: 28 mm WTF is that 1500 or 1600 N ?? Thank you! Greeting Joe