It was #2 in terms of launch Kingdom hearts and it was the number #1 in the second week of release and these don't include digital.  I would say the game is doing pretty well for itself.  Also the question wasnt answered.

Ok...Kingdom Hearts 3 ships 5 million first week, mainline game still selling big (check).  KH3 (and Resident Evil 2) helped move consoles for the past two weeks, game is still a system seller (check).  Nintendo inability to elevate Xenoblade from niche status has nothing to do with the question I asked... I was comparing a RPG dropping -80% being criticized when other RPGs (from megasellers like DQ IX -74%, DQ XI PS4 -79% 3DS -74%, other Kingdom Hearts games BBB -74%, DDD -80%) and the like have similar drops and I can't recall the same criticism.  RPGs have difficult launch week to second week drops, period.

I meant that both Kingdom Hearts and Resident Evil are the biggest Japanese PS4 games this year. 

So if Nintendo classifies a banana a home console it magically will become a home console and consumers will buy it because they think it is a home console? Yeah, makes totally sense to me because #logic.

Who would have thought japanese consumers which are living in a handheld and mobile market would buy Switch because it was a handheld device. Boy no that would be hillarious, totally #illogic.

PS4 is so over in Japan

Can we not turn this into yet another "is Switch a handheld or a console" discussion, it's one of the most overplayed, pointless and boring topics of recent years on VGChartz.

Seems like the argument will never end so long as there are people trying to marginalize Switch's success. 

pointless is a good way to put it, it almost literally doesn't matter at all. We get it, Switch is more likely to appeal to Japan than a regular home console. We get it, Switch may be less likely in it's current state to appeal to Japan than a regular handheld. We already know these factors and they don't need explaining.

I think the PS4 is going to do about as well as expected, which is finish right around the PS3. We do still have a few price cuts to go with the PS4, and some games that can push HW, but it can't be denied that the home console market has just dried up there. I do wonder if the appeal of the PS5 being B/C with all previous systems, if that turns out to be the case, could push its lifetime a little higher.

Why exactly? It's pointing out that almost all JRPGs have the same drop FW to second week. It's odd to say that KH2 dropped anything other than what was expected.