Yes, a map in BF2 can have only one set of navmeshes, so SP's path finding is identical to Coop's path finding. As for gameplay (control points, spawn points, vehicles, etc.), for all rebuilt maps and for many of re-navmeshed maps SP game modes were copy-pasted from Coop. On the rest of the maps SP most probably is the same as Coop, but I can't guarantee this without checking. One thing I know for certain is that Vossenack is currently playable only in Coop.
Regarding the Italian tournament maps... The main goal for these patches is to fix AI for almost 40 official 2.45 maps and then contribute all the stuff to the next release of FH2, so we won't need to fix it again. If anyone endeavours to add AI support to FH2T's maps, it will be a side project.