RSSCloud Vs. PubSubHubbub (what about feedburner?)

In the past few months, a lot of attention has been given to the rise of the real-time web.  The problem is that the web wasn’t designed with real-time in mind.  There is a huge need for the tech community to get behind new protocols that will power this fundamental shift in how web applications work.  Today I want to take a look at two of the leading protocols that enable real-time notifications on the web.  While there are older protocols that enable real-time notifications like XEP-0060, PubSubHubbub (PuSH) and rssCloud are two new protocols which show a lot of promise of gaining adoption.

These days you get a lot of articles in your reader about RSScloud and PubSubHubbub (funny name). I was thinking about yesterday to install the RSScloud plugin for my Wordpress Blog, but I didn't...
Today I checked the plugin for PubSubHubbub and didn't installed the plugin because I'm using feedburner for my blogs RSS feed. A lot of blogs using feedburner for their RSS feed (also techCrunch), so why should I use RSScloud or PubSubHubbub for my blog?