As has been covered in a few places, China has committed not to "follow the path of the US" with its current level of per capita emissions. (I agree with Joe Romm, btw, that they're not otherwise likely to hit the US level by 2017. They were at one-third the US level three years ago, and it can't go up that fast.)
India made an even better commitment three years ago, not to exceed the average developed country's per capita emissions (significantly lower than US per capita). These two commitments significantly exceed anything developed countries have done, especially because of the legacy emissions from developed countries over past generations vastly dwarf that of developing nations.
The third line of defense for denialists and delayers is that India and China are the problem because their total emissions are increasing. They have yet to provide a convincing reason why Western nations deserve permanently higher per capita emission levels.