  Measurements of anisotropic transport properties (dc and high-frequency
regime) of driven vortex matter in YBa$_2$Cu$_3$O$_{7-x}$ with elongated
strong-pinning sites (c-axis aligned, self-assembled BaZrO$_3$ nanorods) are
used to demonstrate that the effective-mass angular scaling takes place only in
intrinsic physical quantities (flux-flow resistivity), and not in
pinning-related Labusch parameter and critical currents. Comparison of the
dynamics at different time scales shows evidence for a transition of the vortex
matter toward a Mott phase, driven by the presence of nanorods. The strong
pinning in dc arises partially from a dynamic effect.
