pure str glavie ftw!!! im switching to glavie.
WHICH DOES MORE DAMAGE you ask?
The pure int spear does more dmg. only because of nukes. 
From my experience I conclude, that
PURE STR uses more hp pots, and
PURE INT uses more mp pots. this is because the pure str will sit there forever hacking away and take lots of dmg, whilst the nuker will 1 hit the monster, there by wasting lots of their mp bar away.
Also, im a pure str who uses garments for mobs
and pvp. so i take a considerable amount more phy dmg than someone in protector or armor. (against mobs anyway.)
(that, added to the fact that I grind earth ghosts and demon horses at a meager lvl 23....)
Pure int players who wear protectors absolutely pwn. (in pve, and i only say this after witnessing PsYch008 totally demolish monsters of a considerably higher lvl) but its even better if you add some hp to your build, whether that be through the heuksal passive, or through actual stat points, to get a 90% mag balance. considerable dmg amounts are thrown up, whilst still having enough hp to save your skin against someone within your lvl range. (1-2 lvls above or below, though, obviously if below, you will pwn them regardless.
)
this is all a matter of my opinion though.
SPEAR=PURE INT and go for the nukes. you know. flame wave arrow, wolfs thunderbolt, ice shot or w/e, and the like.
GLAVIE=PURE STR and wear protectors or garments.
Using either of these weapons with either of these builds is a good plan, because then, unlike myself, you wont be wasting sp lvling a totally unrelated mastery, simply for that awesome heuksal passive. (The hp raise.)
again, this is all based upon my experiences, and my opinions. if you disagree. big whoop. we all have formulated our own ideas about the best ways to play.
P.s. by "using either of these weapons with either of these builds..." I DO NOT, repeat,
DO NOT mean use a glavie for your pure int character. Or vice-versa. jeez.
