If you really think that Pgl is so much weaker then other DD then do this simple test any idiot could understand.

Go to an area with level 50+ enemies. Doesn't matter where. Bring with you a Mrd and and Lnc.

Pick an enemy. Have the Mrd and yourself hit it. You with no stance up, the Mrd with berserk up. Count the Mrd damage per hit. Count your damage per hit. Add your two fists together. Compare.

Pick an enemy. Have the Lnc and yourself hit it. You with no stance up, the Lnc with Power Surge III up. Count the Mrd damage per hit. Count your damage per hit. Add your two fists together. Compare.

Then once you've done this and say "Ha! See my damage is like 20-50 points lower!" , repeat this test, this time comparing your attack speed to theirs. Once you two hit at the exact same time, or very close after the first attack, you will have gained a full attack round over them. Count how much extra damage this adds up to.

THEN, after you've done this, use a stance, and repeat this test. Stance are dependent on the type of enemy and should not be used to check base damage. However on every enemy I have encountered at least one of the two stances increases your damage. It doesn't take parsers or calculating every minute detail of how the wind affected the impact of your punch or how gravity made the Mrd Axe hit harder. It takes using your eyes and not being an idiot. Pgl is not inherently weaker because they use MP. If you want to believe that, can't change your mind, but I know you're wrong.

If you still think Pgl is weak after this, well that's a damn shame. But SE isn't going to change the job because you're a whiny fool who can't be bothered to do anything more then auto-attack and use a WS every now and then.