I reread the chapters and I wasn't wrong.
I didn't check anime..but in the manga, Deidara only mentioned Sasuke's stamina once(at the end).
True, there is no definite evidence that his chakra reserves were empty. But there is no evidence either that he had some left..apart from that a$$pull.
http://www.mangareader.net/93-367-5/...apter-362.html
^This implies that Sasuke's chakra pool is as good as empty. Using body chidori then falling on his knees panting. Can't be more obvious xP
...One could say it was the raiton from earlier...which is as good as wrong.
Then there is Suigetsu saying: "get some rest" (not "get your wounds healed")
Edit
I saw something weird when I reread those chapters:
What is that seal for?
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