for the fun of it, I did a search using google for "amazon echo" news. the results was all about google home. who says google does not stack their search.
on a side note I found the following comparison from cnet. IMO, home still has a long way to go.
https://www.cnet.com/news/google-home-vs-amazon-echo/
I just watched the Cnet comparison of the Echo and Google Home. Towards the end of the video, it was noted that Google Home hasn't said much about home automation. In a way, it's like what Apple has done with their Homekit. Yes, they support home automation, but how many third parties have signed up to make it all work? We already know that Echo supports dozens upon dozens of home automation devices such as Hue, Wemo, SmartThings, Nest, Wink, Honeywell, TP Link, etc, etc, etc... It took anywhere from 6 months to nearly 2 years after the release of Echo for some of these hardware manufacturers to get on board with Echo. How long will it be for Google Home? Are you willing to wait?
As for Echo controlling TV and A/V devices, we can safely assume that Echo will support Fire TV eventually. I think that will happen soon after the next update. Amazon has already announced that the Dot v2's firmware will be aware of other Dots near by. The rest of the Echo line will get the same firmware that is on the Dot v2. If Echo devices are aware of other Echo devices, and the Fire TV already has Alexa built-in, then the next natural progression is for one Echo device to control another Echo device. Also, didn't someone in the forum mention that Logitech (Harmony) is working with Amazon on something? Is Logitech also working on a secret project with Google Home? As for other devices like Roku, Apple TV, Tivo, various cable/satellite boxes, I wouldn't hold my breath. But if there's a slight chance for any 3rd party A/V device to be supported, I'd place my bet on Roku over any of the others.