|It supports different formats like text, JSON and XML.
||It only supports XML.
|It works only over HTTP(S) on a transport layer.
||It can be used different protocols on a transport layer.
|It works with resources, each unique URL is some representation of a resource.
||It works with operations, which implement some business logic through different interfaces.
|It only supports SSL security.
||It supports SSL security and WS-security(Web Service-security).
|It supports transactions, but it is neither ACID compliant nor can provide two phase commit.
||It supports ACID (Atomicity, Consistency, Isolation, Durability) properties of transactions.