Queued copy (useful if copying stuff what takes a lot of time, but you don't want to copy parallel), PLUGINS (!!!),
unicode support looks bit different (FC if can't recognize correctly it shows the "classic" 8+3 fallback, TC shows what it recognizes)
search with regexp / hex - more of a nice to have.
But I found some strange behavior: if you want to change to a place with cd ... FC pops up a command in that directory instead of going there. Quite funny

. It is a common task with not-mounted network drives (without letters) though. TC recognizes both \ and / as directory separators for this command. However this task can be done using the menu Folder / GoTo Folder... (it recognizes both \ and /, but does not strip quotation marks though. And if you go there with a / it can't go up in the tree - gives an access violation) This one is needed if you work in a mixed environment - people using windows and linux boxes, sending you paths in emails

.
Big plus for FC: human readable filesize

. Flat view is also extremely nice.
So far these are the big diffs I've found, must be way more. IMHO when the plugin-support will come it will kill TC on sight.