So turns out the former president of SIE who will have had access to the sales data wasn't rounding up after all as some claimed. They shouldn't have waited this long to finally update the sales total but nice to at last get a confirmation of it reaching 160m though it's still annoying they finally updated it but didn't give an exact number to fully settle things. At least the range has been significantly shortened and Zhuge says while the theoretical maximum is 161.8m it's definitely below that so I expect it to be around 160.5m.
With the PS2's minimum increasing by nearly a million the chance the Switch outsells it has gone down somewhat and it really could come down to the absolute wire at this point which is pretty exciting though as Trunks said hopefully it doesn't finish just above 160m and cause endless debate until Sony finally announces the exact sales total.