If someone immortal gives their life for you and comes back to life a few hours later... what kind of sacrifice was that? Can't be both alive and a sacrifice... pick one.
False dichotomy. We all have souls and will continue to live after physical death anyway. Jesus was obviously a special case as an example of things to come, so he rose first, and many others rose with him. Not only did Jesus die, he also voluntarily took the punishments leading up to and including the flogging and crucifixion, even though he didn't deserve them, and even though they occurred before his physical death.