I insist that you did, because the AI has a margin of error. Check out this game I won against kata-bot. The AI thought it gained 19 percentage points on move 18. It also had pretty wild swings after that. But the AI got it wrong; Black was winning the whole time. This is the margin of error that the AI is susceptible to. And your move 4 was within that margin of error.
P.S.: @flovo ran a second AI analysis that proves my point. If you flip between the two analyses, you’ll see that they differ by a lot even though it’s the same AI and playouts!