I don't think that's really fair. I'm not finding it significantly slower here, and it handles some things worse, but others better - eg try downtown San Francisco and spin around to look up at the tops of skyscrapers...the Bing thing is handling perspective deformation much better, whereas Google Streetview introduces a lot of messy artifacts as the 3d parameters change.

It is limited and it's still beta-feeling, but I'm all in favor of the competition...having two large companies duke it out to provide the best virtual rendition of the world can only be a good thing.

(On a side note, I wonder how long before this gets used for ad placement...when I'm looking at a city street and see a store with a big Pepsi sign outside, why don't I get an ad for Pepsi if I click on it? The technology exists; if I screencap a region of interest and drop the result into Tineye, it's pretty good at finding matches for corporate logos and giving me a link to their website...)