There are two different philosophies at work this month.
1. Sony wants to maximize profit per console sold while not selling a lot of units. That's why there is only one bundle with RDR2 and it's the more expensive PS4 Pro and not the base model and was also severely limited in stock.
2. Microsoft wants to maximize unit sales while losing money per console sold. That's why there are bundles/SKUs galore with no stock limitations and much larger price cuts compared to the one SKU Sony is offering.
All that said, if Microsoft doesn't come out ahead of Sony for NPD it would be an absolute embarrassment.