SharePoint Over UCM

From an end-user's perspective:

Searching for content in UCM is painful.

The indexing process is slow, and the search results are terrible.

The UI in UCM is dated, not very modular, configurable or extensible.

It is harder to expose content in UCM to other consumers.

From a Developers perspective:

SharePoint is built on top of Microsoft .NET.

SharePoint is integrated Microsoft Visual Studio, one of the best development tool in the industry.

Extensions on SharePoint can be written in any .NET languages.

SharePoint uses modern technologies/tools.

It is much easier to write and debug code in SharePoint.