There's a marketing bit in here somewhere.
I guess if we want to compare relative security I think it is safe to say:
BTSX average confirmation time 5 seconds to 8 minutes. (1 block to 51 blocks)
BTC average confirmation time 1 hour to 20 hours (6 blocks to 120 blocks)
NXT average confirmation time 10 minutes to 12 hours
10 confirmations is recommended for small amounts, 720 confirmations - for big ones.