Any onlooker who puts a real currency like Bitcoin in the same category as FarmVille cash has missed the point entirely. The fact that they're both "digital" is where the similarities end... and indeed both Bitcoin and FarmVille cash share the "digital" trait with USD and all other fiat. All money is digital these days - even "paper money" is just redeemable coupons for digital currency in your bank account. The only serious non-digital currency is gold/silver.
USD is actually more similar to FarmVille cash than BTC, because the former two are A) centrally controlled and B) can be created at whim - two crucial attributes, and far more important than that all three of these are digital.
Comparing Bitcoin to "FarmVille cash" is symptomatic for the total lack of understanding and insight by these stone age bankers. Cryptography, P2P, decentralized, I guess most of them haven't got a single clue what these concepts are actually about. But I guess they'll find out soon enough. Cryptocurrency (and more specifically: Bitcoin) is here to stay.