What is the difference between Nadal ending 2008 early with tendinitis and Nadal withdrawing from Wimbledon? If anything the tendinitis this time wasn't as bad, considering Nadal's doctor gave him the green light to play Wimbledon (just not at 100%).
We saw how easy it was at the Australian Open for Nadal to reach peak performance. US Open is no different, he will be fresh from the layoff except he will get even more preparation for the US.
This kind of cycle, a long break every now and then to ward off tendinitis is no different to the way Venus and Serena have managed their tendinitis for the last 10 years. Their careers show no limits.
People hoping for tendinitis to spell the end for Nadal will be shocked to see him still there in his 30s racking up slams, doing the same thing he's doing now, a long break followed by another successful hardcourt slam dunk.
Any talk of Nadal needing more time to find form is laughable and wishful thinking