"I don't see how you can take this and draw a conclusion that video games have the same effect on the prefrontal cortex as meditation."

See below.

"Lots of activities can boost the size of various parts of the pre-frontal cortex – video games, for example – but it’s the disconnection of our mind from its “stress center” that seems to give rise to a range of physical as well as mental health benefits, says Taren."

https://blogs.scientificamerican.com/guest-blog/what-does-mi...

The funny thing is that, as mentioned before, I almost bought into the meditation hype too.