What interests me here is that both your version and the else if version perpetuate the error in the original code which is the case where a is greater than b,

What interests me here is that both your version and the else if version perpetuate the error in the original code which is the case where a is greater than b, which is handled once by a "greater than" comparison, and then again by a "greater than or equal to" comparison, which is clearly redundant. Neither CoPilot, nor you, nor the article author I presume caught this error in the flow control. Catching errors like these adds more value then making it more readable, although making it more readable certainly did expose the error more clearly to me.