Tested May 2026. The same six controllers, PS5 DualSense (firmware 24.04), DualSense Edge, PS4 DualShock 4, Xbox Series X Wireless Controller (Aug 2025 firmware), Xbox One Controller, Nintendo Switch Pro, across the same four browsers (Chrome 130, Edge 130, Firefox 130, Safari 17 on macOS Sequoia).
Measured:
- Feature parity per controller: does the tester read every button, axis, trigger, touchpad, gyro, vibration?
- Schema implementation: FAQPage, WebApplication, Organization, BreadcrumbList? Validates in Google Rich Results Test?
- Page weight: Largest Contentful Paint (LCP) measured via PageSpeed Insights lab tests, 4G throttling
- Data handling posture: DevTools Network tab request count for controller-state telemetry over 30 seconds of widget use
- AI-engine eligibility: answer block presence, entity density, llms.txt at root, robots.txt allows GPTBot / ClaudeBot / PerplexityBot
We built one of these (JoyCheck), disclosed up front, no hiding it. The strengths of each competitor are real and stated honestly below.