A smart TV is just a TV with built-in telescreen capabilities and the ability to phone home to Google.
An Apple TV bypasses Google and sends your information to Big Brother through Cupertino instead.
Edit: Downvoting me for this comment makes me laugh and also doesn't prevent your smart TV from dialing home as soon as it obtains an Internet connection.
A smart TV is just a TV with built-in telescreen capabilities and the ability to phone home to Google.
An Apple TV bypasses Google and sends your information to Big Brother through Cupertino instead.
Edit: Downvoting me for this comment makes me laugh and also doesn't prevent your smart TV from dialing home as soon as it obtains an Internet connection.