I would say no to your interpretation resulting in your second question - you want as much throw as you can get.....That said, this is how I interpret/diagnose this type of ball interaction...it may be correct as to the laws of physics, or not - Freddy may concur, or not....
Imo, the reason you don't want to use outside english/sidespin when wanting to have maximum collision induced english applied instead, is because the more sidespin you have, the more it will take away from and negate the collision induced english......Explaining further >>> To induce collision induced english you want as much firm, solid, 'grabbing' contact as possible to occur between the cue ball and the object ball - a non spinning cue ball will give you this, whereas a ball spinning with self-applied english will more deflect/spin off of the object ball when it strikes it, giving you less 'collision contact grab'.....And so that's why you don't want to use self-applied spinning english, when wanting to achieve maximum collision induced english....
An analogy that I personally think of is...let's say a guy is standing next to you and your goal is, with one firm hard push, to push him sideways as far as you can....well, I think you will be able to push him farther if your hands and arms are moving solidly straight-forward, then if your hands and arms were spinning like tops when you pushed him = (that would be your hands and arms having spinning english applied to them)
- Ghost
ps, hopefully Pat Johnson doesn't see this....contrarian/science/physics geek that he is...
, I'm sure he'll dispute it.....