Has a lot of info regarding the two calibers. You can run a search for info on the Bersa.
Personally as far as autos are concearned, the Bersa is a little big for a .380
As you can see in this photo the Bersa is almost the same size as a 3" 1911
The point of a .380 is to be small and I think that as a BUG, is a little too large.
Here's a pic of a Colt Mustang +2 that my wife carries compared to the Bersa, personally I find the Mustang more enjoyable to shoot. and both have the same ammo capacity.