No difference for the rest of the universe, but the difference between life and death to my current stream of consciousness.
Imagine if the teleporter malfunctioned and created the duplicate on the other end but failed to disentigeate you. A worker notices you’re still in the machine and says, “oops sorry, had a malfunction on this end. Give us a minute to fix the issue and we’ll destroy you. No worries though, ‘you’ made it out the other end.”
Wouldn’t you do everything in your power to get out of that machine before they could fix it and kill you?
I’m not convinced they’re at all the same. Consciousness may go dormant during sleep, and you may not remember it, but it’s still a continuous, uninterrupted, stream of electricity.
This kind of teleportation would completely snuff out that fire and replace it with an identical one at another location. It’s not the same as sleep.