MS has not even confirmed the existence of Anaconda. Insiders have leaked that information to us about what MS AIMS it to be.You're ignoring the fact that last gen was a one v one comparison.
We know that MS are going to be releasing multiple SKU's off the bat, Sony (currently) are not.
MS have said Anaconda will be a premium device.
All this rumour seems to indicate is that the base Xbox will be operating in the PS5 sphere of capabilities and Anaconda above that.
And no, Phil Spencer saying they will set the benchmark for console gaming, does not indicate Anaconda will be more powerful than PS5. We only hear rumors that they are aiming to.