What is better at LHC Mobs Laser or NormalAtt+Siege?

it goes something like (for you):
1-2 normal/siege
3-4 laser/siege
5-6 laser only

when you get more laser it will pass normal attacks on 2 mobs... but youve gimped your output on larger mobs by maxing tank before laser. (is that because you 1hko everything pre-lhc already with 1 laser?)

Yea i 1 hitted everything, since 3.rd job, so yea to me it was a waste to skill Laser and since i started Papping i skilled first Extreme Mech and Laser+1 and maxed out Missile tank then. So Missile Tank was quite useful for me in terms of bossing like soloing zak or pap. Thats the reason i left laser on lvl 1.

So in the End this should be fastest:

1Mob= NormalAtt+Siege
2-4Mobs= Laser+Siege
4-6Mobs= Laser only

?

btw should i max Laser or the 20% party dmg Buff skill?