Nintendo will win this year if it can make enough Switch's. but it probably won't be able to make enough due to parts shortage so Sony should win this fiscal year, but the one starting next spring I would expect Nintendo to win as I think Switch and ps4 will sell about the same amount but 3DS should still be selling maybe close to 5 million on top of Switch's numbers. And after that year ps4 will be past its peak while Switch will still be rising, though 3DS sales will disappear but Switch rising to peak vs ps4 past peak = Nintendo wins for a few years in a row.