Realism has it's place,Alejandro. But I don't think everything should be realistic. Often times I enjoy hammy over the top antics. For example, I know the protagonists in Resident Evil have survived ridiculous situations when realistically they should be dead by now. However, that never stopped me from loving the series.
Certainly Parasite Eve threw around some real scientific terminalogy but truthfully it was still a blend of urban fantasy and science fiction. And you know what? That's okay! The game still had an original premise even if it doesn't carry water when held up under logical scrutiny.