These are done on the INT themed weapons as a side arm to a mainly casting mage, and so are done at high INT and minimal STR/DEX. Im aware that the trident / catch pole / velkas would be better with high STR/DEX but in that case you may as well go +15 weapon and CMW
So this is just tests on the INT themed weapons as a side arm...
All tested on the spear hollow at the sunlight alter - NG7
50 INT / 16 STR / 16 DEX
Attack / 2 handed attack / backstab / 2 handed backstab / riposte / 2 handed riposte / weight / STR/DEX needed
Channellers trident.....197..266..545..551..749..755..6..16/16
Moonlight horn.............210..274..517..517..686..686 ..4..12/0
Catch pole....................266..398..707..728..953..976..6..16/14
Moonlight sword.........366..423..807..807..957..957..6..16/10
Velkas rapier..............177..239..748..751..1024..1027 ..2..8/16
Chaos rapier..............129..187..804..804..1072..1072..1.5..7/12
So for a quick summary ill compare then in 2s...
Trident vs horn. I would always use horn for a side arm to a mage. Trident is 2pts heavier than the horn and for me starting as a pyro base class, it needs 11 extra lvls to meet the STR/DEX requirements. The horn is also longer and in my opinion has better power attacks...
Catch pole vs moonlight sword. (I know they are TOTALLY different) I would always go sword, it is more damage in general, same weight but 4 less dex requirement and has better power attacks. Now I know there will be SOMEONE reading this all "Meh the catch pole power attacks are totally viable" and whilst I agree, that silly jump is no way near as practical as the lazer beams from the sword.
Velkas vs Chaos rapier. I added in the chaos just to see if it would stand up to INT weapons as a side arm. Velkas has slightly more regular damage and chaos has lightly more critical damage, other than moveset preference there isnt alot to say there.
Velkas vs moonlight horn. velkas weighs half of what the horn weighs and attacks quicker with ALOT higher critical damage. On the flip side it requires more dex (I usually start as a pryo so thats 7 pts for me) and doesnt have the range.
I hope this has helped, please feel free to add your thoughts =)