Toddler speaking gets impressive/surprising quite fast, whereas the drawing usually does not. The most surprising thing about most toddler drawings is listening to the kid describe it or tell you about making it.
The consistency of descriptions is particularly surprising to me. Like you got a roughly circular collection of seemingly random scribbles, but they can tell you exactly which parts of it correspond to the person's nose, hair, arms, eyes, etc. And the descriptions seem to stay the same if you ask about the same picture on different days. Still not sure what to make of this phenomenon but it is fascinating.