The Stockholm Environment Institute (SEI) has recently issued a report that examines four recent detailed studies of countries’ mitigation pledges under the Cancun Agreements, for the purpose of comparing developed (Annex 1) country pledges to developing (non-Annex 1) country pledges. It finds that there is broad agreement that developing country pledges amount to more mitigation than developed country pledges. That conclusion is robust, in that it applies across all four studies and across all their various cases, despite the diversity of assumptions and methodologies employed and the substantial differences in their quantification of the pledges.