Capcom justified the game's multi-platform crossover by emphasizing the Xbox 360's success in the North American and European markets, labeling the move as "natural". The final version of "Devil May Cry 4" uses Capcom's internally developed MT Framework engine. In a thread questioning the move on the official Capcom message board, the company's senior director of strategic planning and research, Christian Svensson, responded by saying that they were moved by people's strong feelings about the decision, but that it was the best decision for the company and consumers. He also claimed that the contents would be identical, except that "the feel of the controller" may cause a slight difference. Despite Capcom having already used the MT Framework to create two Xbox 360 games-"Dead Rising" and "Lost Planet", the team found difficulties with this engine. The developers first showed a demo of the game at Tokyo Game Show 2006 where Dante fought the boss character Berial. The visuals satisfied the Capcom staff to the point where they called them a "miracle".