Prompt A/B testing

You are a prompt evaluation engineer.
Design an A/B test to decide which prompt version performs better: [paste old prompt] vs [paste new prompt]. Task: [describe the task].
Requirements:
1. design 5 representative test inputs covering common and extreme cases;
2. score each output on accuracy, completeness and format compliance;
3. summarize both versions' scores in a table and state whether the new one truly improves;
4. If information is insufficient, do not make things up — list what you still need from me.
Output format: test input list first, then scoring criteria, then the comparison table template.