I've noticed a few mistakes about the games.
Resi 2 was claire and Leon which for both you had scenario A & B which when you play A for Leon you had claires B going on as you run in to each other through out the game then vice versa.
Resi 1 you had Jill & Chris but there was multiple endings you just had to do minimal changes through out the game for the endings.
For resi 3 the original if I recall you had ly 2 endings one had barry Burton from resi 1 and that's the only 2 games you see barry in.