  Recently Yu and Sun [Int. J. Theor. Phys. DOI 10.1007/s10773-014-2360-x] have
presented probabilistic teleportation of 3-qubit cat state via 6-qubit cluster
state. The success probability depends on absolute value of only two of the
coefficients of cluster state i.e. |c|^2 + |d|^2. We have demonstrated the
feasibility to teleport 3-qubit cat state via 2-qubit non maximally entangled
Bell state instead of a complex state like 6-qubit non maximally entangled
cluster state. In this comment we have prescribed an optimal protocol for
teleportation of n-qubit state of the form (\alpha|x> + \beta|\bar{x}>)_n via
non maximally entangled Bell state a|00> + b|11> henceforth allowing
teleportation of n-qubit state via 2-qubit Bell state. The success probability
of the prescribed protocol is |b|^2.
