PES overall rating for players is not much about the players stats like FIFA at all, more about some we weird positional strength for players, plus versatility, and how good their key attribute stats is ( Lucio is prolly overall 89 because he has same number on defending) and plus of course the stats themselves. Vucis actual stats are really good, 87 and 86 on several offensive stats etc.
In essence, if you play PES series you should know by now overall rating number means little for some players.