[1.2.278] Even moar skill balancing

Pierce is impressive on paper, but in reality...

In reality the one second charge-up combined with the uneven killing (the ones in the back die much faster, this is only slightly helpful) make it just kind of average. Sure Carlos can kill the last two monsters in the first Pierce and the next 2 or 3 in the second, but by that time I could have shot 3 Torpedoes, be absolutely sure they're dead, and start on the next monster/mob. Pierce is cool (as are 250k criticals), but it's really overrated compared to mob skills from other jobs.