It will surely keep the PS4 above 200k for a while. Hopefully until Detroit launches. But I doubt it's going to sell much more than 300k at launch. On the other hand this probably will mean that Sony sells close to a million PS4 units in April. Putting the grand total close to 5 million for 2018 after as of May the first. If the PS4 isn't overtracked as I kind of suspect, given the low shipment forecast.
Please excuse my (probally) poor grammar