Click latency difference between Deathadder V2 vs V2 Pro

Hello, I'm sure your developing dept. did the latency tests, could you share them? I just need two numbers, one for V2 and the other for V2 Pro. It's just there are contradicting info on the internet. rtings says V2 Pro has click latency of 6ms, while simply V2 having 7ms. Yet mousespecs claims Deathadder V2 has lower click latency than V2 Pro by a large margin. You'd think they'd have the same click latency due to same sensor (focus+).