It is equivalent. It is also the reason why Slack and others have taken the world by storm, and why IRC and XMPP are more or less dying. Because Slack (and FB messenger, and Apple Messages, and Discord, and... and...) provide an out-of-the-box experience immediately available to anyone (including non-programmers or programmers who couldn’t care less about scripting a yet another barebones app).

And the problems continue beyond just scripting another app. The world is mobile, and old protocols have missed the memo.