A tweet from Asus ROG can be seen as evidence that previous rumors about the planned release of an ROG gaming phone are correct. The tweet shows an unknown phone attacked to a gaming controller, which leaks suggest is equipped with a Snapdragon 845, 8 GB of RAM, and a possible 120 Hz display.
https://www.notebookcheck.net/Asus-ROG-tweets-image-suggesting-a-gaming-phone-to-compete-against-Razer-Phone-Xiaomi-Black-Shark-and-ZTE-Nubia-Red-Magic.306476.0.html
Whats difference between flagships and gaming phones? Its un-ordinary not-a-copy design and internals made with improvement in mind.