  Excitation spectra of T=0,1,2 states in even-even (e-e) and odd-odd (o-o) N=Z
nuclei are analyzed within a mean-field based model involving isovector and
isoscalar pairing interactions and the iso-cranking formalism applied to
restore approximately isospin symmetry. It is shown that T=0 states in o-o and
T=1 states in e-e nuclei correspond to two-quasiparticle, time-reversal
symmetry breaking excitations since their angular momenta are different than
zero. On the other hand the lowest T=2 states in e-e and T=1 states in o-o
nuclei, which both are similar in structure to their even-even isobaric
analogue states, are described as e-e type vaccua excited (iso-cranked) in
isospace. It appears that in all cases isoscalar pairing plays a crucial role
in restoring the proper value of the inertia parameter in isospace.
