It will suffice to tackle the first and your so called 'objective' pronouncement right there. Nadal and Fed both conceded the exact same number of breaks in the respective matches (3). So much for only one of them being broken at will. But it gets better. Fed saved 3 out of 6 break points whereas Nadal 1 out of 4. So who defended his serve better? Should be very clear to all but an 'objective observer' like you.
Now coming to draws, before Agassi, Fed faced Hewitt, Nalbandian and Kiefer. Not amazing but at least a decent draw. Before Djokovic, Nadal faced Youzhny, Verdasco, Lopez. Funny how you Nadal fanboys and fangirls keep shrieking about Fed's weak era but blithely ignore every instance when Nadal profits from a weak draw. Same scenario in 2013 vs 2008. Djokovic again was pretty much the first worthy opponent Nadal faced in the USO. Effing Gasquet in the semi? Whilst Djokovic tired himself out seeing off a strong Wawrinka. If anything, one thing that is constant about Nadal's USO wins is the presence of a weak draw. OK, I think given his bad luck at the AO, his USO largesse balances things out. But we are not discussing that here. Same age Fed unarguably had a tougher path to the finals and you have nothing to show he played any worse than Nadal in the finals either. Especially 2008 was an imperious performance.
Lastly, I saved the biggest flaw in your argument for the end. How about 2004, 2006, 2007? Why did same age Nadal not fare as well as Fed in 2009, 2011 or 2012? Why exactly is he supposed to be excused for that? That's the final chink in your argument. Nadal sporadically profiting from weak draws at the USO in no way compares to Fed's incredible 5 straight USOs. Look, do we ever compare Fed at RG with Nadal? So why do you make an ass of yourself comparing Nadal to Fed at a tournament Fed clearly owns over him and stretching logic beyond belief to somehow contrive a scenario where Nadal supposedly owned Fed at USO? Be happy with what you have. No player has ever owned a slam the way Nadal has RG.