There is no point in comparing gear or stats or skills for ISEN Vs. JAINUS.
Only one thing matters and that's the player population. ISEN has roughly 10% of the population of JAINUS, thus jainus PA is WAY more crowded, with all kind of people like scouts, rumirs, dhans etc going at mobs, priest has nearly no chance to get 10 points with mobs, only the ones who can get party for winged foot, are full psy/int and have an upgraded staff and attend 4 or more PA's each day (the last PA's are the least crowded) have a good chance of getting enough points.
This is not the way PA should be played, it should be viable for all classes to obtain points.
QED: PA has to be changed so that classes like vit defenders, priest and such can get 10 points too. This could simply be done by developing a support system in which party members (who are nearby and hitting the target) get 50% of the points of other members in their party, thus supporting a DPS in party will gain you points.
Fixed, everyone happy.