Gemini in Slides can't generate full presentations

Gemini in Google Slides cannot generate complete presentations. Parth Shah tested Claude Design, Copilot in PowerPoint, and Gemini in Slides by creating an eight-slide financial planning deck with a Warm Sand and Emerald Green color scheme. All tools received identical prompts including a horizontal timeline, 2x2 grid, and insurance formula. Only Copilot in PowerPoint and Claude Design produced professional, client-ready decks. Gemini in Slides failed to generate any full deck, requiring manual input to build content.