Because the Father has exalted the name of Jesus, there is no other name under Heaven, on Earth or underneath the earth that can compare to the all powerful name of Jesus. The power of God is not so much just in the name Jesus since there are many people that are called by that same name. However it's the name that represents the one who is not only Son of Man but also the very Son of God.
“And His name, through faith in His name, has made this man strong, whom you see and know. Yes, the faith which comes through Him has given him this perfect soundness in the presence of you all.” Acts 3:16
“Therefore God also has highly exalted Him and given Him the name which is above every name, that at the name of Jesus every knee should bow, of those in heaven, and of those on earth, and of those under the earth, and that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.” Philippians 2:9-11