I was in Morzine on a Whyte T130 last year. Steepish angles, 27.5, 130 back and 150 front. I felt like my bike was a bit out of its depth. I now have a Privateer 141 with better 150 Pike Ultimates with slacker head tube, bigger wheels, lower and longer and it’s just so much more confident in the steep and fast stuff. Not sure that answers your question – not been to the Alps but at the Golfie, Lakes and Snowdonia it’s been a much more fun and capable bike when with only a bit more rear travel.