More concurrent players doesn’t equal more sales.
The actual sales numbers ranks god of War at #1 thats all we know as factual evidence. You tried to say that because MHR was split into two SKU’s that it was selling more and you can’t tell that from just that alone because 3rd and 2nd on the list could be far lower than #1.
For ex. If MHR combined sales for week 1 was 250k, and god of war as one unit was 280k its the same result despite the split SKU. We know that MHR sold 500k because Capcom updated their sales to announce that rises sold 8 million, where as before it was 7.5. Which means all god of war had to do was sell 500k+ to be a bigger seller, and its tracking currently to have sold over 1m