Note, of course, that the Ryan Plan includes the exact same cuts, even as he demagogues them out of the other side of his mouth.
The difference is how the savings are used: Obama us
es them for subsidies to enable low/moderate income Americans afford health care coverage, which is part of why the Congressional Budget Office found that ObamaCare doesn't increase the deficit. Ryan uses them to 'pay' for tax cuts for the wealthy, which of course would blow up the deficit...unless you eviscerate most of the federal government's essential functions.
Which he proposes to do.