Is this better? http://i.imgur.com/qiZgj.png

Direct comparison of some of the more egregious examples in Firefox (Top) vs Chrome (bottom). Look at the tab title, the text in the dark grey nav bar, the aliasing on the back button, the aliasing on the text, the aliasing on the edge of the "O" in the Google logo, and the aliasing of the text under the buttons.

It's more obvious when zoomed in and I can see your point. But do you not experience the first image, the zoomed out version? In that one I can barely differentiate.

No; oddly enough, the scaled-down image looks better than the actual rMPB does! This makes zero sense to me, but it is what it is.