Yeah, the velocity was good, although it's not what it used to be in the summer months (sitting 95 and topping out at 98/99). I think some people tend to forget how hard CC threw, even in recent years, once the weather warmed up. But again, sitting 93 and topping out at 95 is more than fine.
But I think saying he was unhittable early in the game is a pretty big exaggeration. I can show you games where CC was unhittable, and those looked far different than this one. When you're making those sorts of evaluations, the result is far less important than the process. Sure, CC didn't give up any hits, but he was behind in too many counts, had too many balls hit in play, and couldn't miss any bats vs righties.