Believe SwiftUI is amazing because it come form the iWatch team, so it had to be declarative for all platforms from the beginning. Looking forward to Compose working across all Google platforms. Phone/Chrome/Watch/TV/ etc ... without any code changes like SwiftUI (for the most part) 😀
For SwiftUI they started with different devices plus the phone. With Compose it feels like other devices are an afterthought.
Going to write an article on medium compare iWatch to Wear dev. Will provide a link when done.