Considering the period, the whole latest gen sells from more than decent, XS, to excellent, NS. Both PS5 and XS could sell more than what Sony and MS can currently produce, NS still very strong and currently untouchable leader, probably 9th gen won't outsell 7th overall, with its three strong home consoles and one stellar and one very good portable, but with NS quite surely going to outsell 3DS and WiiU combined, if both PS5 and XS will do well enough lifetime, this gen will outsell the previous by a healthy margin.