I was just joking about the Crypto years. People are always saying that Litecoin is a copy of Bitcoin, but forget that it's faster and can outperform Bitcoin.
FirstLitecoin is far behind Bitcoin: it hasn't been battle-tested by being hammered with Satoshidice for months. Bitcoin devs have included fixes to UTXO-related problems in Bitcoin 0.8 (DoS of nodes by sending them large amounts of transactions based on invalid inputs for example) that are still missing from Litecoin.
If Litecoin wants to be taken seriously its developers might want to at least take it to the same level than Bitcoin.
SecondLitecoin isn't any faster than Bitcoin for the same security level: confirmations done on average 4 times faster don't mean anything when a single confirmation on the Bitcoin network involves more than 10 times the computation power (1 confirmation of Bitcoin: 40TH/s sha256d during 10 minutes, 6 confirmations of Litecoin: 2GH/s scrypt for 15 minutes).
1 scrypt on GPU: ~1000sha256d on CPU.
40T * 10 * 60 = 24PH sha256d
2G * 15 * 60 = 1.8TH scrypt ~= 1.8PH sha256d
And I'm generous: Bitcoin is probably at 50THs and Litecoin is going down at lest than 1.8GH/s.
Confirmations have a goal: avoiding people rewriting the transactions' history by forking the chain. Their effectiveness rises with the computational power behind them. Having the Litecoin client consider 6 confirmations enough is in fact a limitation: for the same amount of power, it gives the same guarantees than Bitcoin doest at 6 confirmations when it reaches 24 confirmations. It's far easier to disturb a system in a 15 minutes time window than in a whole hour.
Just consider the recent Bitcoin fork: being on IRC I was aware of it before the fork was ahead by 6 blocks (luke-jr was rounding up all the mining power he could find in various channels). The devs had the time to contact pool admins and Gavin could issue a network-wide alert at roughly the time needed to make sure transactions in the fork weren't considered confirmed. With Litecoin it would have been too late probably before anyone noticed the fork.
A note for space geeks: there's a benefit of relatively large time targets, miners with high latencies with the rest of the network can still mine efficiently (not mining on stale data proportionally too long). You could mine on the Moon without any theoretical problem for example. The maximum latency between Mars and Earth is 20 minutes. 6 confirmations (1 hour) is not far from what you'll need anyway if you want Bitcoin transactions between the 2 being usable. Litecoin transactions would be considered confirmed before even being known on the other side (of course you would have to use something other than TCP/IP to make your transmissions across some kind of bridges, but it would be usable)
Disclaimer: I mine Litecoins when they are more profitable than Bitcoin, but it's purely for profit: I really don't see which practical benefits the system's block speed brings.