If you have to say they will support HTML5 but only on xyz browsers or OS'es then it's like a gas station saying they support Regular but only for Ford and Gene

If you have to say they will support HTML5 but only on xyz browsers or OS'es then it's like a gas station saying they support Regular but only for Ford and General Motors cars. The reason I can say that is any _other_ site that claims HTML5, works fine on my Chrome browser on Ubuntu.