Are you sure about those numbers (can you show your code?) Every benchmark I've seen shows a much bigger difference. Here's a jsperf (courtesy of the WayBackMachine) that shows a difference of about 20x+ over normal function calls.
https://web.archive.org/web/20141121220218/http://jsperf.com...
That said I don't see the applications for currying in JavaScript. It just makes code less readable. It looks like an anti-pattern to me.