1st...try searching:
viewtopic.php?f=2&t=93173&p=1214738&hilit=phy+mag+reinforce#p1214738Secondly, it will vary by the weapon. For example, my cleric rod has no need of phys attack (or very limited need, if at all) or phys reinforce, or crit, or attack distance.
Att rating means how hard you hit, there's a range and the higher the rating, the closer to the top of the range your average damage is.
Crit doesn't matter at all on a magical weapon.
So if you're doing something with a bow, you want to push phys attack and reinforce then magical optionally (unless it's a spear, which is primarily magical). Euro weapons like a cleric rod have no need for phys at all.
Meh, there is more to it than that, and I'm thinking I got some of it wrong, but I never play a Chinese. Just search around, there are lots of threads discussing it including one very long one that I can't find right now.