
Originally Posted by
Zirael
You must remember the off hand weapon doesn't proc hidden 3x relic damage, or in case of using OAT weapon as off hand, OAT doesn't transfer to main weapon. There are also situations where developers themselves said they want you to full time Thief Knife for TH purposes (and take pride in doing so) so it might hinder your DPS even further.
I'd also like to point out, with Ragnarok, Amano etc, you take it to 99, unlock merit weaponskill and are done. With Mandau, you rake it to 99 and then you take Twashtar99 to off hand. This means it costs TWICE as much TIME and GIL to make Mandau99+Twashtar99 compared to just making Ragnarok99. Also, you're forgetting 1-hander weapons have bigger vs. enemy attack/defence ratio penalty compared to 2-handers (and lower ACC/ATK bonuses from DEX/STR).
Since we're comparing against Ragnarok99, it also has constant CritRate+14% effect and another +5% possible from aftermath, whilst Mandau99 has 10/tic poison.
Did I mention Mercy Stroke being only good SA/TA stacked and outside of that Exenterator with it's AGI mod being junk on anything Tough+ ?
So I say Mandau (and other 1-hand weapons as well) were treated harsher on the way to 99 compared to 2-hand weapon stat growth.
I'm grateful you managed to not misspell Mandau or Twashtar, but there is no such thing as ragnarock in this game.