why are you refering to the Romney plan when your chart compares Obama and Ryan
Because that's what the election is about - and because the chart should be nearly similar for the Romney Plan, which commits to many of the same reforms and spending growth rate reductions.
Ryans original budget include a near zero tax rate on capital gains and dividend
Which would be a great blessing for economic growth...
and although he's since changed that (hmmm - I wonder why) he hasn't provided much details on where the cuts in spending would come from
His plan balances the budget eventually and not quick enough admittedly - BUT it's a plan with enough legislative detail explaining how to balance the budget. Where's Obama's Plan? What taxes does he want to raise? What spending does he want to cut? Obama and the Democrats haven't put any of that on the table - because they know they'd lose the election if they did.
or who would benefit the most from tax cuts.
I'll give you a hint: those who pay the most in taxes.

Those details are something he'll work out later and I suspect, if given the opportunity, he would go right back to his original budget which makes passive investment income virtually tax free and basically eliminates medicare for people over 55
His plan doesn't eliminate Social Security and Medicare - it keeps it the same for seniors on these programs and those soon to be on it, while reforming it to keep it solvent in the future. It's rather funny that just a few days ago you were defending SS/Medicare reforms by saying that they were done when necessary to keep the programs solvent - and now you are against reforming SS/Medicare to keep those programs solvent because, well, those are the talking points coming down from the Obama Administration.