Twin weapons...Are they that good?

[Hrith]

Twin Swords - yes. Blades such as Yamato and Musashi hit a total of 6 times

Paired Swords hit 5 times, not 6.

The combo is not that hard to use on any weapon if you time it well.
Of course a God/Battle, as decswxaqz suggests always helps.

Only 100 ATA, by the time I got up to hard Mines, I could equip that but I have none and I probably can't use it for HUmar.

HUmar, HUnewearl, RAmar and RAmarl are the 4 chars that can use Twin Psychogun.

green star? you mean gold? gold means 11 stars and 2 gold is 12(complicated huh? </sarcasam>)

Actually it seems complicated enough for you >_>
1 golden star = 10 stars
2 golden stars = 11 stars
3 golden stars = 12 stars

example of 12 stars:

well its a toss up between Sange & Yasha and Asuka

It's definitely Sange & Yasha, how could a common weapon such as Asuka compare to the rarity of Yasha ?

can i find Twin psychoguns with a skyly or viridia char?

Viridia finds it in Ultimate VR Temple from Indi Belra.