They're using their so-called specialized Razer Gaming Switches . Hence who knows what's inside them, definitely not Omron standard so if you want to compete with Logitech, Razer will do what it has always done before. Drop the quality, use sub-standard hardware then spend tonnes of money marketing it to noobs everywhere.
That is the Razer Corp. way, appeal to the ignorant whilst pretending to compete with the last decent manufacturer of mice, Logitech.
Hate having to compare one corporation to another but going on past history, Logitech will take the high ground whilst Razer will dwell in the sewers trying to earn a living.