I would say yes, the max damage is incredible, but your duels will vary alot.

The minimum damage is the problem, the best ethereal weapon Ive ever seen was a conquest sword

Ethereal conquest sword of self repair, 285% eth-Lo, I could never beat that fucker.

Some duels you will kill in a couple hits and some you will get owned.

When I used one (299%ed 8 max, eth/zod) I could go a whole game without getting killed, or without winning once, it's a gamble.

"When the people find that they can vote themselves money, that will herald the end of the republic."- Benjamin Franklin