Steemit has unparalleled security, with its four keys and master password.
Steemit has uniques security with Steem to SteemPower conversion.
Steemit has no transaction fees.
Steemit has very fast transactions.
Steemit uses only a fraction of its transactional capacity, and since the last HardFork some blocks have zero transactions.
Steemit has baseline APR of around 2.5% per annum which can easily exceed 10-12% in experienced hands with sufficient SteemPower.