[DOM Level 3 Events] Ordering event handlers registered by different means

Has the issue of ordering execution of handlers added by the following means
been addressed?
a) node.oneventx = f;
b) node.setAttribute("eventx", f)
c) node.addEventListener("eventx", f)

There is a chance DOM Events is not a right place to specify this behaviour
but can the author then make sure this is specified somewhere else so that
the modern browsers would implement same behaviour?

Sergey/