Soul Calibur IV director Katsutoshi Sasaki talks about online gameplay:
"Enjoying a fighting game online was deemed impossible in the past but we are seeing more titles with such mode as being standard in recent days. Soulcalibur IV is also down as having an online mode as standard but it is an unknown fact to the outside world that we have been looking into such possibilities for quite some time now.
It was 1999 when the first Soulcalibur installment was in development when we first looked into the possibilities of implementing such an idea. Not surprisingly, due to numerous issues such as the network infrastructure, communication technology and servers available at the time, we concluded that it was too early in developing the idea. Simply speaking, we didn't want to compromise the quality of the battle sequence while playing online."