Fiel didn't post descriptions, he posted the actual skill numbers.
The current combo is 120% in the data, the soul master combo is 200% in data. I don't see how that could possibly be weaker. It's probably a mistake they'll fix, but for now they are obscenely strong.
Let's assume it gets made actually weaker - that is, 160% advanced combo with 10 orbs, instead of 190% (ie. drop the bonus for each skill from current combos - 110% and 130% instead of 120% and 150%). They'd still end up with a higher multiplier on their Brandish than current Heroes. A 120 would still be equivalent to a 156 hero in strength.
One other thing to factor in is that they can have more w.atk than their base class, since at most they contribute 12 atk while they can gain 20 atk. Not really so significant though.
The current combo is 120% in the data, the soul master combo is 200% in data. I don't see how that could possibly be weaker. It's probably a mistake they'll fix, but for now they are obscenely strong.
Let's assume it gets made actually weaker - that is, 160% advanced combo with 10 orbs, instead of 190% (ie. drop the bonus for each skill from current combos - 110% and 130% instead of 120% and 150%). They'd still end up with a higher multiplier on their Brandish than current Heroes. A 120 would still be equivalent to a 156 hero in strength.
One other thing to factor in is that they can have more w.atk than their base class, since at most they contribute 12 atk while they can gain 20 atk. Not really so significant though.