It seems logical that would be more difficult to create a new object out of nothing rather than scanning all an object or a person particles and atoms and then transferring them into another location using quantum entranglement or something similar. So I think matter replication is more difficult. A replicator device would have to have stored in its computer all the positions and features of all the particles and atoms that object that is gonna be created is made of. It would have also to store the kinds of chemical elements that this stuff is made of as well.
But I read in other articles that teleportation would actually be more tricky, even more difficult teleporting people. Because the teleported object would have all its particles and atoms in the exact position and state before the teleportation have occurred. And the impenetrability of matter law say that no electrons or other fermion particles(which atoms are made of) can have the same spin, so the teleporter computer would have to be so powerful that it would have the capability of scanning not only all the particles that makeup the object or person but all its spin and other features that are inherent to particles like electric charge. But I think a quantum computer that would have millions of qubits could handle this job easily.
An interesting and important detail is that technically speaking, the two technologies appears to be the same thing but they have different objectives.
What are your thoughts?