6. Call a raise in any position if the following conditions are present:
a) you are holding an SC or a PP
b) There are two or more people already in the pot
c) your hand is not strong enough to 3bet (not in the top 1/2 if their opening range from that position)
This means 3-betting PP's a lot? Aren't you taking away a lot of it's potential that way?

I don't see any difference while being in or out of position. Can that be ignored because we often have initiative on the flop?