Lanefan
Victoria Rules
Absent kryptonite, Superman has about +40 in any skill you can possibly think of; and he doesn't auto-fail on a 1.But it is a cost directly caused by the failure. If you had successfully overcome the difficulty of the cliff, your friend would be alive (albeit perhaps on death's door, if you got a partial success; that'd depend on what the roll was and how the GM adjudicated it). Because you failed, your friend is dead when they very easily could have survived.
It's like a Superman story. Superman is not interesting if you ask, "Can he complete this single task?" Whatever the task is, the answer is almost surely "yes", unless there's Kryptonite involved, in which case it's almost surely "no".
Which is part of what makes him the most boring superhero ever.
The PCs, on the other hand, don't have +40 to every skill roll they ever make and thus can - and do - fail at what they try, on a fairly frequent basis. This is a great part of what makes them interesting: they're not perfect.
The other question, that I poked at upthread but got no feedback on, is one of resolution granularity. You want "Climb the cliff to save my friend" to be all one action, I want it to be at least two discrete actions (and maybe more depending what awaits at the cliff-top) each resolved separately. For example, you could succeed easily at climbing the cliff (step 1) but then still succeed or fail on whatever it is you do to try to save your friend (step 2). But if you fail climbing the cliff you never get to your friend, who is now hosed.But when you introduce collateral damage and bystander complications, suddenly he becomes fascinating. Can he save everyone from this burning building? Maybe, maybe not! That's a lot of variables and a tight timetable. Can he stop the volcano, or at least delay it enough to permit and evacuation? Unclear! That's putting him up against a threat that he can't just punch into submission.
Overly simple, hard-binary failure/success is much more limited as a mechanical structure than you (or indeed many!) recognize.