No, it is not. Orthodox Christianity holds that we all sin, that sin is birthed when temptation and the desires of the flesh conceive (James 1). The idea that Jesus came with a nature different from ours, that our illness, suffering, and physical mortality was foreign to Christ was denounced as unorthodox centuries ago.We are born as sinners, and we continue to sin, as all od us are accountable to God.Is not a belief in humans having sin natures one of the orthodox truths of Christianity?
Christ was born with and into the same humanity you and I share, yet without sin.