Malavitas are not that stiff. I found the 390 Boss more stiff. This is all 2012 stuff.
It's not soft by any means. But I think the Re:Flex allows it to flex a little more.
Just your general hey I don't really know what flex this is binding. Similar to the K2 uprise for me. Raiden Blackhawks a smidge more stiff. 390 Boss noticeably stiffer. Again, all my own experience.