no. Elseberg released one study about the Vietnam war. he actually read all of it and had been showing it around to senators and officials trying to get something done. he leaked it as a last resort.

in his video interview with the Guardian Snowden explicitly contrasted what he did with what Manning did : snowden looked at what he was leaking and claims he kept stuff that would harm the US. ( he still supports what Manning did).

this is the problem Manning literally did not read the classified information he was releasing and given his obligation to protect sensitive information and knowing that in some cases information was classified to protect lives( e.g informant names), his actions were morally reckless. if he had leaked just the collateral murder video , the he would have been justified.