I find the Google Assistant to be way better that Apple's native solution that is Siri. However, that doesn't mean there aren't improvements to be found in the iPad version, as the iPad's bigger screen means that you'll be able to use the app in both landscape and portrait mode.
Google Assistant for iOS is not the same as in Android due to API restrictions. With it being time for iPads to receive this update, it seems a little too late Google pushed this out but nevertheless some iPad owners are probably happy to see a different assistant than Siri. So, you can also use Assistant while playing a game or watching videos. It has become more important for apps like Google Assistant, Amazon Alexa, and Microsoft Cortana to support multi-platforms, apart from their own hardware.
Need a few examples of things you can do with Google Assistant on your iPad?
While the earlier version of Google Assistant on iOS was available only in English, Google says in a blog post that the new version will be available in other languages including French, German, Italian, Japanese, Portuguese (Brazil), and Spanish. You can get started with Google Assistant for iPad by downloading the app from the iTunes App Store [download].