Two perfect brothers.

Adam was Created a perfect man. He had free will. He sinned. After that he was no longer perfect.
Jesus was born perfect (no sin nature). He had free will. He never sinned. Now that he has risen from the dead He is no longer a man and therefore no longer able to sin.
Adam was created before Jesus was born but Jesus is the one who created Adam.
Jesus the Man lived for about 33 years but Jesus AKA God always was and always will be. We can not give him an age. He was born so that God could have a birthday party. God likes a party but God has never had a surprise party. In fact God has never had any pleasn't surprise. God knows everything so you can't surprise Him. You can please Him though. Trust, Love, Obey.
Jesus was the perfect kid for Joseph and Mary but he still caused problems even though He did not sin. Remember what happend when he was 12 and it was time to go home but Jesus was in the temple discussing God's word with the teachers. He had the whole thing memorized. Was He born knowing every verse in the Bible? No. He was born knowing God. He read the Bible to memorize it in a language but He already knew the Spirit and Person of God so there were no hard to understand verses. That made it easier for Him to memorize. He did not memorize the verse and chapter numbers because they were not added until later. And when He read from Isaiah in the temple that Saturday when He said the scripture was fulfilled that day, It was not that he requested a scroll of Isaiah. No matter which scroll was handed to Him he could've found some proficy that He was then fulfilling. Amazing guy that Jesus. Better follow Him. Together we can do anything.
As for Adam........He believed in Jesus and therefore he got saved and is with God now.