Its literally same for other classes. Seen it on another forum thread where a mage showed that how much stats it gives. While it effects your damage...
Too much damage in the game screws the whole gameplay related to strategy and this is where i agree with you. The idea is fine cause upgraded version...
Not sure if this was added earlier as a bound reward but I asked a few people and they said they never seen tidal surge as vanity so wanted to add it...