It's also amusing how those guys labeled as "thinking" drivers, winning at the slowest possible speed, never losing their head in the heat of battle, never risking too much and all that, when once in a while they win with a large (and, by the former definition, quite unnecessary) gap, it's suddenly a great thing.
I mean, I can virtually here how JYS hypothetically commenting that day would go on all race how stupid it was of the leader to go that fast in those conditions when a much slower speed would have sufficed to win.
I think the whole "winning at the slowest possible speed" thing was a myth or at least exaggerated, until the modern era of safety cars combined with tyre and/or energy management.
In the past, it was actually sensible to build up a good cushion if you could, to cover off things like punctures, other non-terminal delays. For instance had Mansell gone a bit harder in Monaco '92 he'd have still been ahead of Senna even after his incident. And even when fuel management was important (e.g. mid-80s) it could still be a legitimate strategy to go hard early to give yourself a cushion, then if you had to ease up later you had a margin to play with. Do that nowadays you are just an SC away from having your lead erased to nothing and then having to go slower late on with no gap to defend.
How that explains a four minute gap, well chances are Stewart was driving well within himself late on and still quick enough to have that gap. And then there's the old thing that if you ease up too much you risk breaking concentration and actually increasing your chances of an off.