Felling Turtles.

Is there any advantage to building one of these instead of a Mining Turtle. From what I know a Mining Turtle can do everything the Felling can, if not more. Kinda rendering it useless?

Thanks.

Felling turtles cut wood, mining turtles mine and dig. Simple.

Turtles can break every type of block, but they will only get the resource if they have the proper tool.