You mean that IA couldn't differentiate between them when the test was done. Software improves over time. 30 years ago computers could not beat the grand master at chess. Now it's simple for them.
There really is no such thing as AI, as Artificial Intelligence implies the computer is supplying the recognition process.
In reality the computer is just manipulating ones and zeros in simple math, and all the intelligence is supplied by teams of human programmers. And the appearance of recognition is totally dependent upon how clever these human programmers were in anticipating scenarios.
But computers could always beat grand masters at chess.
It was just a matter of how much times anyone wanted to invest in the programming.
Obviously a team of a thousand programmers working for years, can come up with a program much better than one that was written by a single programmer in a week.
The computer had nothing to do with it.
And there has been no advancement in the basic technology in the computer or programming in the last 70 years.
Making them smaller and faster only made them cheaper, not better.
Programming languages have actually gotten worse, and no they only teach bad scripting languages like Python instead of real programming languages like C or Pascal.