Could someone please temme how to play as a pax? I tried searching through forums but couldn't find much regarding the specific problems i had. Im playing it this round and there certain factors that come to mind:

- I played as a rev pop banker with a high nw  round. And a pax with 4 times the number of wizzies but at a lower nw failed to cast ops on me.
- I have approx double the wiz count and a 70% increased magic bonus. But i also do have double the pcount and 60% more NW than the person i cast ops on And I'm failing a lot.

I had assumed from the first experience that a higher NW means better chances of casting ops in general. Combined with the magic bonus of a pax it should be pretty strong. But now i find out that was only for defensive purposes and offence is actually the opposite.
Does anyone know of an approx formula for casting successful ops. Which includes the difference in wizzies, Magic bonus, planet count and NW. Also how all this matters from an offence and defence perspective.