"With the person using Facebook on mobile, there's more engagement and they're spending more time. Mobile users are more likely to be daily active users," he said. "Before we had a mobile core team... Now we are a mobile company."

Dan Olds, an analyst with The Gabriel Consulting Group, said Zuckerberg came across as being clear about the company's challenges and being in control of figuring out one of them -- mobile.

"It sounds to me like he was simply being straightforward about his thoughts and Facebook plans," said Olds. "Although I don't think that was what investors or Wall Street necessarily wanted to hear. I think they would want to hear him take responsibility or maybe even apologize for the huge losses from Facebook stock since the IPO."

However, aside from Zuckerberg falling on his sword, Olds said investors and analysts want to hear what he's doing to move the company forward. While he talked a good talk about mobile, Olds said he's waiting to see how it all plays out.

"He's right that much of their future is in mobile, but the proof of how well they're doing in mobile today will be in the pudding that we'll see in their next earnings report," he added.