Um... no. SCV is the best online experience (gameplay wise) I've ever had in a fighter. It has the occasional annoying random disconnect but the netcode itself is stellar and I can do things like just frames, whiff punishing and reacting virtually perfectly. Never played SCII online so I can't speak for that but I was just playing SCV a couple months ago.
SC2 is my favourite fighting game of all time. I hate how Namco really messed up with the netcode and ruined what would have been an amazing experience .
@Zeo since the game came out I've had a great connection with it and it's worked out fine (and it's much better than SCIV, trust me). I guess I worded my statement wrong. Most of the time, all is like you said. But now, with even 3 bars I will continuously lose connection and won't be able to play. It's very frustrating not to be able to play with people I have a decent connection with.