Bard is only a week old and has a large "experimental" sticker on it. Besides its UI is better and the answers are succinct which I prefer.
As for the UI it's a take on the tried and true chat UI same as ChatGPT's, it spits the whole answer at once instead of feeding it to you one word at a time, it has an alternative drafts button, the Google it button is a nice touch and it feels quicker.
"I'm still learning coding skills, so at the moment I can't help with this. I'm trained to do things like help you write lists about different topics, compare things, or build travel itineraries. Do you want to try any of those now?"