Board Thread:Questions and Answers/@comment-117.221.185.165-20140629062237

I have read on the wiki that the tower itself also shoots flames faster and flames deal more damage. So how much more powerful is the 2 - 4 than 2 - 3 excluding the ability? Is it worth upgrading to 2 - 4, for the tower alone, not the ability. Say, if the summon phoenix ability is not available, would you still get the upgrade?  