The solo mechanisms between CR and FF (and other ganesha games) are handled differently. Both systems rely on the solo to make logical tactical decisions for both sides. In CR this tends to become masked somewhat due to the reaction mechanism, but even so, you still must decide the opposition's tactics when it activates. In FF and other ganesha engine products, the lack of a CR-like reaction system leaves many battlefield decisions in your hands. Some results cause individual and group morale checks and withdrawals, so there's some involuntary reactions, but not to the extent of CR.
I think either mechanism works well for solo, but you have to make logical choices for each side.