It's honestly really annoying because other than the fact that they're new IPs (and the install bases at the time of release were really different) they have NOTHING TO DO WITH EACH OTHER.
It´s an interesting comparison because a new IP with a far smaller marketing budget sold more than a game positioned as a MH substitute/ btw as Sonys answer to the loss of the MH franchise and with a much bigger marketing budget, because for its implication about the systems viability for new 3rd party investments.