Err, no.
This is as much a compromise situation as it is an historical readjustment.
Given that there is one less province available than in RTW this is what resulted from long debates between those who wanted to fuse sardinia and corsica in one province and the quarthadastim members who wanted 3 provinces for the island.

I'm sure you can imagine the situation, while for the units I feel Tanit is better suited to answer.