Alright,
Both of them are cryptocurrency, both of them need a wallet file to open your account.
But Bitcoin don't need a password to send BTC to someone else ! Ether have a password for every user to secure your account.
In fact bitcoin have the same security problem than credit card today. Anyone who drain your file have access to your money.
And the best one in my opinion is Siacoin, you can use a seed (a long series of words to recover your wallet file from anywhere. then unlock it with a password like ethereum. Its just : Better.