What is the difference between the Power Stake and the GroundBreaker Stake?

Our GroundBreaker Stake is the best option for sign frame installation, particularly in windy areas and in loose soil.  The stake installs 22" into the ground and 13" into the post.  

Our Power Stake is used for real estate posts. The stake installs 17" into the ground and 10" into the post.  

http://www.4everproducts.com/groundbreaker-stake/

http://www.4everproducts.com/power-stake/