Some more fixes

Author: normesta

articles/storage/common/storage-use-azcopy-configure.md

@@ -103,9 +103,9 @@ Express this value in gigabytes (GB).
 
 ### Optimize file synchronization
 
-The [sync](storage-ref-azcopy-sync.md) command compares file names and last modified timestamps before the starting the sync operation. If you have a large number of files, then you can improve performance by eliminating this up-front comparison. 
+The [sync](storage-ref-azcopy-sync.md) command identifies all files at the destination, and then compares file names and last modified timestamps before the starting the sync operation. If you have a large number of files, then you can improve performance by eliminating this up-front processing. 
 
-To accomplish this, use the [azcopy copy](storage-ref-azcopy-copy.md) command instead, and set the `--overwrite` flag to `ifSourceNewer`. AzCopy will compare files as they are copied instead of comparing them up-front before the operation begins. This provides a performance edge in cases where there are a large number of files to compare.
+To accomplish this, use the [azcopy copy](storage-ref-azcopy-copy.md) command instead, and set the `--overwrite` flag to `ifSourceNewer`. AzCopy will compare files as they are copied without performing any up-front scans and comparisons. This provides a performance edge in cases where there are a large number of files to compare.
 
 The [azcopy copy](storage-ref-azcopy-copy.md) command doesn't delete files from the destination, so if you want to delete files at the destination when they no longer exist at the source, then use the [azcopy sync](storage-ref-azcopy-sync.md) command with the `--delete-destination` flag set to a value of `true` or `prompt`.