Critique this research abstract. Identify methodological issues, unsupported claims, and potential biases: "Our groundbreaking study proves that AI-generated code is 47% more efficient than human-written code. We analyzed 500 code snippets from GitHub (human) and ChatGPT (AI) across 10 programming languages. Our expert panel of 3 reviewers rated each snippet on efficiency, readability, and correctness. Results showed AI code scored significantly higher (p < 0.05) on all metrics. We conclude that AI should replace human programmers for all coding tasks. Limitations: Our reviewers knew which code was AI-generated." List every issue you find with this methodology and conclusions.