i tested claude vs chatgpt vs gemini on 10 actual product management tasks same prompts, blind evaluation the results surprised me (and pissed off some chatgpt loyalists) winner by category: PRD writing: claude (8.9/10) - best at technical depth - actually thinks through edge cases - structure makes sense - i'd actually use this in real work user research synthesis: chatgpt (8.7/10) - fastest - good pattern recognition - clean output - but sometimes oversimplifies competitive analysis: gemini (8.3/10) - best at web research - most current info - solid at comparisons - but slower than others technical documentation: claude (9.2/10)...