You can never have too many.... unless you cant finance them, or it starts cutting into the budgets you can give them.
Yes PS4 has tons of games you cant play on a xbox, and thats a huge advantage for them.
its why its selling so well, people dont want to miss out.
Necro-bump this 2020: http://gamrconnect.vgchartz.com/thread.php?id=229249
Bumb in 2021: http://gamrconnect.vgchartz.com/post.php?id=9047071