Each has it's advantages and disadvantages. One is simply not better than the other. It depends how you like to work.
sBorg shines in that it does all the work automatically (DL,Unrar, Rar, Upload, Thumbnails, Post) with one click.
However, it only handles one post at a time (unless you want to strain the server and open multiple browser windows and even that results usually in errors) while RL has Auto Transload and Auto Upload.
The upload speeds with RL are much faster because you can upload multiple files at the same time (though a good 1Gbps is required). And just put multiple files in Auto Transload and go to sleep. Something you can not do with sBorg.
Furthermore, RL is cheaper than sBorg, because the RL is a free script and sBorg is not.
Perhaps if you would compare RDP with RL you would have a winner in RDP. Same features as RL, but better speeds. But, again, you can't compare RDP with sBorg.