  The Bel-Robinson tensor $B$ and the tensor $V$ have the same quasilocal
energy-momentum in a small sphere. Using a pseudotensor approach to evaluate
the energy-momentum in a half-cylinder, we find that $B$ and $V$ have different
values, not proportional to the "Bel-Robinson energy-momentum". Furthermore,
even if we arrange things so that we do get the same "Bel-Robinson
energy-momentum" value, the angular momentum gives different values using $B$
and $V$ in a half cylinder. In addition, we find that $B$ and $V$ have a
different number of independent components. The fully trace free property of
$B$ and $V$ implies conservation of pure "Bel-Robinson energy-momentum" in
small regions, and vice versa. In addition, we also demonstrate the tidal
heating, rate of change of momentum and spin angular momentum flux by using
these two tensors.
