The reason you wait 1 hour is because you want to make sure there are sufficient computations behind your transaction that the chance of it being reverted is low. If you want the same security with Litecoin, you need the same number of computations, not the same number of confirmations. That is, it takes just as long (assuming the hash rate is the same, long if it's less).
Thank you for pointing this out. I have been quietly thinking that this is an issue for several alternative cryptocurrencies (including my preference, TerraCoin). I notice that some processors wait for more confirmations in TRC than they would for BTC, and I assume that is because they are aware of this issue.