Hope this isn't redundant, you need a search capability for the forums!
Guess what the search box on the top right is good for :-)
It would be nice if WinSCP could "learn" what the difference in times is based on how a date changes after a file transfer, and then apply this difference to commands like compare directories.
I've thought about this already. I do not know yet if it is good idea or not, I'll think more :-)