Yeah, it's only THE FIRST DAY and people are calling this a complete disaster as if SFV was any better. If indeed that's what SNK said, then that means they'll do what's necessary to make the netcode better.
SFV had a different problem at launch which was access to online play was tied to their servers that crashed constantly. The netcode itself is good (and has been since beta) but SFV's problems lied more with matchmaking. The crashing got ironed out (mostly) in a few days so it's too early to say which "is any better."