http://bugs.winehq.org/show_bug.cgi?id=56695
--- Comment #11 from Shmerl shtetldik@gmail.com --- Also pinged Unreal Engine developers about it.
They suggested getting access to the engine code and figuring out how what that prerequisite check is doing, so Wine would be able to work around it.
Unfortunately this still can be constantly changing. I suggested may be they could add some command line parameter to turn off this check. Not sure if they'd care to add it though.