Ethereum's smart contracts are obviously more developer friendly and easier to implement. Ethereum smart contracts are the go-to for dapps, despite having a significantly smaller userbase and market cap than bitcoin.
To say Bitcoin smart contracts are equal to Ethereum smart contracts would be akin to comparing Myspace to Facebook.
Bitcoin originated smart contracts, but they were severely limited due to a filter that was imposed. Arbitrary scrypt execution was seen as a security risk (despite not being Turing-complete), so a set of scrypt templates were whitelisted. I think all clients would accept blocks with any scrypt in them, but most pools would only accept transactions with the fixed templates.
Bitcoin does have enough flexibility to do trustless cross-chain trading though, so it's possible to do dapp logic in Eth and manipulate BTC funds indirectly. (IIRC)
I thought it was a lot cooler back then. People got their own customized little places about themselves, maybe with some fun media playing. Now it's all boring and sterilized.
To say Bitcoin smart contracts are equal to Ethereum smart contracts would be akin to comparing Myspace to Facebook.