Yes and No.
Moving data from A to B using scp is ok if your link is stable. At my work, to download the 12 Gbytes of that other crappy OS, there is an SMB share. I have tried many times to copy 4 Gbytes dvds over it, most of the times with no luck. Even when there is a single source and a single destination torrent provides error recovery, and consistency not matched by other protocols.
Other nice feature is that any client can become source of new files. Let's face it: rsync is beautifull but setting up an rsync server is not for newbies. On the other hand, any newbie can create a torrent file and let others download from him, with a lot of benefits.
And the last is that most torrent clients have bandwidth limiting options. Even when you can say rsync how much you want it to use, to be able to change it on the fly sometimes is priceless.
So yes, I think torrent in some scenarios, even with single source and client, is the way to go.