  We have evaluated pseudoscalar and scalar neutral pion photoproduction in
$\vec{\gamma}p\to\pi^0p$ and $\vec{\gamma}p\to a_0^0p$ above the resonance
region and within Regge phenomenology. Our fit, including GlueX $\Sigma$
pseudoscalar photoproduction data, shows that previous SLAC $\Sigma$
measurements for $\vec{\gamma}p \to \pi^0p$ above $E_\gamma = 4~\mathrm{GeV}$
are at variance with SLAC data with more recent measurements made by GlueX in
vicinity of $E_\gamma = 9~\mathrm{GeV}$. The Regge model predicts that the beam
polarization asymmetry $\Sigma$ of the scalar meson is opposite to that of
pseudoscalar meson photoproduction, however, the cross sections are similar.
While the vector natural parity meson exchange is dominant in both cases, the
contribution of the pseudovector unnatural parity meson exchange is very small.
Using Regge phenomenology, we predicted high energy behavior for double
polarized observables $\mathbb{E}$, $\mathbb{F}$, $\mathbb{G}$, and
$\mathbb{H}$ for the reactions $\gamma p\to \pi^0p$ and $\gamma p\to a_0^0p$.
