Copilot Cowork's browser automation is noticeably faster than Claude Code or Codex when controlling web interfaces. The speed difference is significant enough to raise questions about the underlying implementation. Could be using a different browser control protocol (maybe direct CDP instead of higher-level abstractions), more aggressive caching of DOM state, or parallel execution of browser commands. The latency gap between AI coding assistants' browser ops has been a pain point - if Copilot Cowork actually solved this with a better architecture, that's a legit technical win worth digging into.