Some tweaks

Author: normesta

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

@@ -105,9 +105,9 @@ Express this value in gigabytes (GB).
 
 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. 
 
-To accomplish this, use the [azcopy copy](storage-ref-azcopy-copy.md) command instead, and set the `--overwrite` flag to `ifSourceNewer`. Instead of an up-front comparison, files are compared as they are copied.  
+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.
 
-The [azcopy copy](storage-ref-azcopy-copy.md) command doesn't delete files from the destination, so if you want the copy operation 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`. 
+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`. 
 
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