How is MSBuild Incremental Building Different from Copy with SkipUnchangedFiles=true?

Question

If I have an msbuild target that just copies changed files, why would incremental building be better than just using the Copy task and setting SkipUnchangedFiles = true?

Answer 1

Who said it would be?

The only reason I can think of would be if you extended your target later on to perform other tasks then just copying.