Yes. The key assumption in Obama's infographic is that "Romney eliminates all tax benefits, except those for savings and investment". To the best of our knowledge, Romney has only indicated that he will cut the expanded refundability of the Child-Tax Credit, and the earned income tax credit (EITC) - which our analysis includes. Our analysis is based on the publicly available information on their respective plans. We make no 'assumptions' to fill in gaps.
We note though that the Romney plan does not address how his proposal will be funded and reference the $2.8 Trillion revenue shortfall his plan creates.