Llama3 8B significantly outperforms ChatGPT-3.5, and LLama3 70B is significantly better than that. These are ELO ratings, so it would not be accurate to try to say X is 10% better than Y because the score is 10% higher.
Obviously Falcon 2 is too new to be on the leaderboard yet.
Honestly, I don't think anybody should be using ChatGPT-3.5 as a chatbot at this point. Google and Meta both offer free chatbots that are significantly better than ChatGPT-3.5, among other options.