Difficult climbs are a different challenge to altitude. It's climbing vs mountaineering. For example I believe Cho Oyu (8188m) has few if any technical climbin

Difficult climbs are a different challenge to altitude. It's climbing vs mountaineering. For example I believe Cho Oyu (8188m) has few if any technical climbing sections - you basically walk up. That's a very different challenge to a technical climbing. Have a look at https://en.wikipedia.org/wiki/Grade_(climbing) https://en.wikipedia.org/wiki/Grade_(climbing) for more info.