Microsoft Sync Framework Or Replication

What is deference between Microsoft Sync Framework and Replication? which one is better?

What is the use of Microsoft Sync Framework?

Microsoft Sync Framework is a comprehensive synchronization platform that enables collaboration and offline scenarios for applications, services, and devices. Using Microsoft Sync Framework, developers can build applications that synchronize data from any source using any protocol over any network.

Sync Framework is a programming framework. You still have to program it yourself. Replication is an end to end feature.
Replication solves changes in schemas too (I believe Sync Framework deals with synchronizing data, not schemas)
Replication has many more enterprise features already resolved.
Sync Framework can be used for not only databases, but anything with a sync provider (replication is only for databases).

I'm sure there are more differences.. but these should give you a start.