You need to feed it high quality data. Try Gemini Notebook, but this time load up a spreadsheet of fundamentals information for all US stocks or ETFs. The answer will differ and be much more nuanced.

I dont think you can rely on an out of book chat agent today to have all the necessary information at its disposal - even if you can pull a stock quote in ChatGPT, it doesn't mean it's going to look at PE multiples on 5000 stocks...