Those are the same thing. When facing the villa, there's no opening on the left side, only on the right side which has the dog and locked door, which leads to the basement with the storage and shooting areas.
It's just the 3 Nine Years Ago levels and the expanded Baron Dumas' Villa level with the secret basement, along with the cutscenes in them. There's the pen dart weapon in Man of Influence but the Crossbow has more utility and is better overall. Along with the lock picking tools and safecracker gagdets in the Nine Years Ago levels, which are just reskins of the barrette's lockpick mode and code breaker respectively.
Other than that some levels have some minor differences, but most significantly in Man of Influence Scene 1. Other than the new pen dart weapon, the women's restroom where the receptionist ran off to is unlocked and you can enter it in the PS2 version, but it exists in the PC version and you can clip through a wall to get into it. The office glass is see-through and some has been added in place of walls. which includes a new opening to one of the offices. A woman was moved probably so you could sneak by more easily, and a security camera was removed in both scene 1 and scene 2.