  We compare the strong part of the $\bar{\hbox{N}}\hbox{N}$ interaction
obtained by the Nijmegen partial wave analysis and the results of some of the
most popular $\bar{\hbox{N}}\hbox{N}$ optical potentials in configuration
space. We have found severe discrepancies in most of the partial waves,
especially above $p_{Lab}$=400 MeV/c where the partial wave analysis displays a
resonant-like structure in the $^{31}$S$_0$ and $^{33}$P$_0$ waves. Some
theoretical difficulties to interpret this behaviour in terms of dynamical
resonances are pointed pout and an alternative explanation is suggested. A much
better stability is observed in the low energy parameters, apart from some
discrepancies due to the presence of near-threshold quasi-bound states in
particular waves. Large deviations have also been found between the
corresponding potentials, at short and medium-range ($r\gtrsim 1$ fm)
distances.
