He can test his connections average speed here.
These two I've found quite accurate.
Speedtest.net - The Global Broadband Speed Test
Bandwidth Place Speed Test

Also is he using it to run applications remotely, or just to access files remotely.
If it's just to sync or access files, there are plenty of new products that may perform better.
This looks promising.
Dropbox - Home - Secure backup, sync and sharing made easy.