While both Bard and ChatGPT are LLMs with capability to generate natural text and bring creative responses, both have their strengths and weaknesses. ChatGPT has been around for much longer than Bard and is currently much better trained.
Bard has similar features as ChatGPT but you don't need a Windows 11 device, or Edge browser, Bing Chat and other criteria, so the steps are fewer. It works with all browsers and operating systems. which is a huge plus in its favor.
When we asked the question to Bard on how it fares against ChatGPT, it answered that it may be slightly better at understanding natural conversation style and providing comprehensive and up-to-date answers.