Most late Sega PC ports were either on a system that was easy to program in the first place(Billy hatcher on Gamecube) or where multiplatform, and used a version that was easier to program as a porting template(Viking on the 360/PS3).
VC is a PS3 only thing, and is a JRPG strategy. 2 rather imposing genres on a platform that was hated by most programmers(at first anyway) due to its over engineered complexity. VC is probably the hardest one of the listed games in the original petition to port for that reason. That is more or less why it is a surprise to most people.
But yes, as you say, it may not have been responsible for the port, but could have had a positive effect on it.