I don't particularly think one is better than the other.
Sorry, but that is incorrect. Maybe if you are using monopoly money, they can be functionally equivalent.
- The security of Ethereum - a potato inside a cardboard box without a finished consensus mechanism, a brand new untested blockchain, and a small network
- The security of Bitcoin - hashing power of more than the top 1000 supercomputers combined, distributed worldwide, with 5 extra years of development, superior liquidity by a factor of 3000x+