Victimize II.... Considering PGL doesn't get TP at the rate of, say LNC, simply making good use of Keen Flurry can greatly assist in use of Victimize II.
Also, some people saying Doomspike II much stronger than Victimize II... it really makes me wonder where they are getting such info. It's either coming out from where the sun don't shine, or was perhaps tested on a mob resistant to blunt. Victimize II hits considerably harder than Doomspike II. Doomspike II has the benefit of being a column AoE, which brings out the most benefit.
As an example I'll use the Ifrit fight. On Ifrit my Victimize II often did 1k+ damage, reaching as high as just over 1200. This was with Raging Strike II, Ferocity II and Blindside II of course, and done on Ifrit's rear as a critical. In all the same buffs and placement as well as critical hit, highest I've done on Doomspike II is just over 900 - 902 if I remember correctly. Both done at 3k TP.
Now sure there's some gear difference to account for, but on LNC I have considerably higher attack power and STR while on PGL I have about double the crit potency on body. I would consider that more or less equal at best, with the edge still going to my LNC as far as damage output goes.
So burst damage-wise, Victimize II takes the cake. The only 2 skills I can say surpass it is Chaos Thrust done with 3k TP while target is under 20% health, or Simian Thrash done at 3k TP.
That brings me to Simian Thrash. I often hear the argument "We can't use the strongest WS in the game because it has an evasion requirement" to which I always present the should-be-obvious counter-argument that Simian Thrash is only so strong because it has such a specific requirement. It's an effective solo/offensive-tank tool. For a DD PGL the bread-and-butter WS is Victimize II. Having both meet the same purpose would be redundant as they are now.