I think that you are correct that it probably makes no difference using 95ron not 98, not an expert but apparently the car adjusts itself to the fuel used. It is YOUR car and if you are happy then that is what matters but remember I was reprimanded for using 97ron instead of 98!!!!!.
How are you getting on with the car I am delighted with mine, different world regarding quality to my discovery sport.
2017 GLC AMG43 premium plus, night pack, leather, intel lights, 360 camera, side steps. = sadly gone
Now GLE450 Premium plus, Selenite, Black/White Nappa leather, Tech plus pack, Driving assistance pack, Tow pack, Off road pack, 22 inch wheels.