The catch to that statement made by Bakar is that he says Stadia will be faster than local gaming systems in "a year or two." Bakar says that Google is on the verge of being better than local hardware due to advancements in modeling and machine learning. He says that the Stadia team believes that in the next year or two games running on Stadia will feel faster and more responsive in the cloud than locally.
He notes that the games will feel faster and more responsive locally than console hardware "regardless of how powerful the local machine is." Bakar points to the "negative latency" as a workaround for any potential lag between the gamer and the server that could be hundreds of miles away. Negative latency is described as a buffer of predicted latency input that can include increasing FPS rapidly to reducing latency between player input and display or predicting user inputs.
Predicting user input sounds like something that could annoy gamers if they choose a different input than the console predicts. The system will have to be seen in action to know how well it works. Reports indicate that while the Google system may be ready for what it thinks is your next input, the local player will always have control over the input. Google announced the games that will launch with Stadia and the cost in early June.