It only take 20-30 minutes for my LTC to get around, but my BTC takes a solid hour or longer for 6 confirmations. Other than speed though, BTC has the obvious edge.
All you need is 1 confirmation to be reasonably sure, 2 confirmations almost sure thing. The 6 confirmations is just unnecessary too much. Only once I saw 10+ confirmations to be orphaned when the blockchain splits between 8.x and 7.x versions