Power difference between SSG and Super Sayain 3

Hi, I want to make a battle with SSG Goku but I'm unsure of his Overall Powers. What is the difference between the two in these categories:

• Energy Manipulation
• Physical Strength
• Travel Speed
• Combat Speed
• Durability

Also is SSG mode basically Super Sayian 4?

Thanks for the any info!

http://www.obdwiki.com/character-profile-son-goku/ basically shows goku got a HUGE boost in power from his new god form