We were out for a walk/forage yesterday (SWMBO and the little fella and I) and I had a look at what was in my pockets. I realised that if we were stranded, we could make a shelter (SAK), light a fire (lighter), leave a note for rescuers (pen and paper), and then find the car and drive home (car keys).
Seriously though, being in a bushy frame of mind and with the improvisation and craft skills that it opens up, I think any of us would have a slightly better chance of surviving a given situation, but possibly only slightly. I have 3 weeks' worth of survival rations around my waist, so my priorities would be shelter (fuselage of the plane), water (bottled, condensation, dig a whole in a depression, melt snow) and fire. I reckon I'd have a chance, but would I be able to watch the little fella dying in front of me for instance? Would I want to survive that? I don't know.
When one reads survival stories, the common thread that comes through is an absolute bloody-minded determination to get through, possibly allied to a slight lack of imagination. My endurance sport training might help in this (one foot in front of the other, over and over again). But I'd also like to have a BOB with me...