Second prediction is a bit bold, no? How do things stand now?I actually think that the first predction is the bolder of the two.
I predict that ps4 will become sonys second best selling system
I predict that black Friday sales this year for consoles will be big
I predict that vizioneck in some form finally comes out late 2018
Currently the PS4 has 2 million sellers in Japan, once MHW releases it will have 3. Pikachu already mentioned the ones I was mainly thinking of but there are more potential candidates:
Minecraft (that game just keeps on selling)
RDR2 (the last Rockstar openworld game sold like 1.5 million units in Japan growing exceptionally from its predecessor)
GTAVI (if it happens, it's gonna be huge in Japan as well)
Death Stranding (MGS was big in Japan, so this should at least have a shot at being big as well)
MHW2 (should this Monster Hunter be successful on PS4, I could easily see Capcom releasing a sequel or something to it in the next 2 years)
Ghost of Tsushima, Sony Japan JRPG (ok, this is really just wishful thinking)