I don't know what you are getting at? LR3 also had the Export (to HD) and Upload (to FTP) options. Performance in LR3 was much better for the export to HD option that LR4 is. I also found the upload option slower than exporting to HD and using a FTP client to upload myself. I haven't used that option in LR4 as it wasn't great in LR3.
All I want is the export to HD to be as fast in LR4 as it was in LR3. At the moment it is painfully slow. I'm considering an install of LR3 which I'll export jpegs from LR4 to just so I can use the faster Web export.
Im on LR4. On a Mac. Its taken all day to make a web file from 375 images. What is wrong with LR? Im going to start using Capture One Pro for contact sheets. This stinks and I don't see any solution on this site.