Was Jesus sinless because He was not "born in sin?" Or was He sinless because He obeyed the Law and His Father?

both, he was not born from Adams children but a direct creation like Adam was. To buy back for us what Adam lost. Then he was sinless to be a perfect sacrifice.

Jesus was sinless because He was God Incarnate. He died, but not because He sinned. He died so that you wouldn't have to. 

Original sin is just an analogy for our human nature. That is why we are all born with it. Jesus was meant to be sinless because he had no human father and inherited God's nature, not human nature. Of course the writers did not know any better back then and thought everything came from the man and women were just incubators. Even if a God could contribute, the gene pool would be half God, half human, meaning Jesus would have inherited Original Sin from his mother Mary. You could not even claim Jesus was sinless due to his actions because he did sin several times. He disrespected his parents several times and just like the male writer writing the stories of Jesus had a condescending attitude towards his parents and sometimes even his followers. Certainly cursing a fig tree for bearing no fruit out of season did him no favors either, where the writer was attempting to make a point because all the stories about Jesus are fictional and created from using other sources, such as the Septuagint (Greek translated OT) or Matthew and Luke using a lot of what Mark had written as their source.

He was sinless because He was Almighty God.

Being God the Son, Jesus was incapable of sin.

Jesus did not inherit sin from Adam.

Jesus is sinless because he's imaginary. Fictional characters are incapable of both thought and action and are consequently incapable of violating or adhering to a moral code.

The 3 little pigs are sinless too as are Jack in the Beanstalk, TinkerBell and the MadHatter et al

Eye roll

He was sinless because he was God.

He was fictional.

“Sin lies only in hurting other people unnecessarily. All other "sins" are invented nonsense. (Hurting yourself is not sinful - just stupid).”

Robert A. Heinlein (American science-fiction Writer, 1907-1988)

HE WAS SINLESS CUZ HE IS PART OF GOD!!!!!! ....WRONG....JESUS NEVER SINNED...HE TOOK ON THE SINS OF HIS HUMANS TO HELP US..