  Fusion excitation function of $^{35}$Cl + $^{130}$Te system is measured in
the energy range around the Coulomb barrier and analyzed in the framework of
the coupled-channels approach. The role of projectile deformation, nuclear
structure, and the couplings of inelastic excitations and positive Q$-$value
neutron transfer channels in sub-barrier fusion are investigated through the
comparison of reduced fusion excitation functions of $^{35,37}$Cl +$^{130}$Te
systems. The reduced fusion excitation function of $^{35}$Cl + $^{130}$Te
system shows substantial enhancement over $^{37}$Cl + $^{130}$Te system in
sub-barrier energy region which is attributed to the presence of positive
Q-value neutron transfer channels in $^{35}$Cl + $^{130}$Te system. Findings of
this work strongly suggest the importance of +2$n$ - transfer coupling in
sub-barrier fusion apart from the simple inclusion of inelastic excitations of
interacting partners, and are in stark contrast with the results presented by
Kohley \textit{et al.}, [Phys. Rev. Lett. 107, 202701 (2011)].
