Creekwarrior,
You said it well, several times. Yes, there IS a difference between the big guns and the small ones when things do not go just right. And if you hunt hard enough and long enough, eventually you will screw up a shot - maybe just a little - but enough that a big bullet hitting hard will make a difference.
The only thing that I would add to your terrific dissertations is try saying:
"300 Weatherby Magnum" Now THAT on conjures up some imagry and reflection for most folks my age!