XBO/PS4: small game selection, moderate competition with other game releases, early adopters are willing to pay higher prices for better versions of multiplat games
360/PS3: huge game selection, high competition with other new game releases and with older games on that platform, cross-gen versions are perceived with less value for the older platforms
PC games: biggest game selection, harshest competition with other new game releases and with older games, harsh competition within that platform (many different online stores, key resellers...)










