Seems like over the last 5 years they haven’t really done anything but add crypto buzzwords to the project site.
You can think of each CID as a mangent link, and each CID can point to more CIDs.
Where as in a torrent the peer tracking is done at the whole torrent level, instead of the chunks inside the torrent.
Torrent V2[0], which has poor adoption thus far, should also allow for a similar ability. To my knowledge this is not being taken advantage of yet.
An extremely interesting problem, fingerprinting generic binary - reducing kilobytes and megabytes into a handful of bytes, and avoiding collision.
Much simpler on large data.
As other commenters pointed out, the biggest real difference is that IPFS objects can cross-reference each other by hash, which allows you to do partial updates.