Well they needed to start from scratch. There's nothing special about SF4's netcode.Sinatar said:SF4 didn't run on MT Framework unlike MvC3 so they had to start their networking layer from scratch again. MvC3 is also *tons* faster then SF4 and has a hell of a lot more to keep track of which is going to add to the network bandwidth requirements.
Like I said, BlazBlue was a port of an arcade game and runs perfectly. 10 year old games on emulators run better. There's no excuse.