Everyone with an internet connection can easily access Twitter for the latest scoop. And while the use of Twitter as a news medium is growing steadily, there are some drawbacks from relying on this medium too heavily:

The reality is that news no longer breaks; it tweets.
The average person on Twitter is connected to about 140 people. Add ReTweets and reactions to the mix, and suddenly important information can travel faster than the traditional news cycle of responding to an event, checking facts, and reporting. So while neither one is wrong, it can stir a lot of confusion leading to misinformation.

Important information cannot be summarized in just 140-characters:
It is important for true media and publications to find a way to combines the immediacy of Twitter with authority, depth of content, and storytelling; basically combining new technologies that marry social media with the traditional news gathering process. Speed of spreading information is one thing, but content and context play an important role as well.

So while twitter can be useful for providing links to existing stories, other limitations still make it a poor medium for news coverage. The fact that the only way to extend each post is to link to a previously existing story means that it is no longer "live coverage." But if one good examples on how to post news in real-time, check out Reuters and Al Jazeera. Unlike mere Tweets which are forgotten in a glace, stories like these somehow manage to stay relevant till today. And that’s the future of journalism.