  Traditional idea of Pomeron/Reggeon description for hadron scattering is now
being given theoretical foundation in gravity dual descriptions, where Pomeron
corresponds to exchange of spin-$j \in 2\mathbb{Z}$ states in the graviton
trajectory. Deeply virtual Compton scattering (DVCS) is essentially a 2 to 2
scattering process of a hadron and a photon, and hence one should be able to
study non-perturbative aspects (GPD) of this process by the Pomeron/Reggeon
process in gravity dual. We find, however, that even one of the most developed
formulations of gravity dual Pomeron (Brower--Polchinski--Strassler--Tan (BPST)
2006) is not able to capture skewness dependence of GPD properly. In Part I
(arXiv:1212.3322), therefore, we computed Reggeon wavefunctions on AdS$_5$ so
that the formalism of BPST can be generalized. In this article, Part II, we use
the wavefunctions to determine the DVCS amplitude, bring it to the form of
conformal OPE/collinear factorization, and extract a holographic model of GPD,
which naturally fits into the framework known as "dual parametrization" or
"(conformal) collinear factorization approach".
