Board Thread:Metal Gear Solid V/@comment-6747658-20150826194634/@comment-6747658-20150827073915

There is also the matter of time, the leaks all came within the same day of the leaked copies. Reviewers have said that the main story alone takes up to 30 hours, so it is not something easily rushed. Not to mention that the secondairy ending requires you to replay missions on harder difficulties (some sources even claim a third ending requiring all the missions to be completed on hard). The timeframe between leaked copies and leaked spoilers is simply too small, this is not something they could have easily sped through it because from the reviews we know that Motherbase's development is important in regards of progressing the game, needing certain weapons and the like. I sincerely have doubts that anyone has finished the game within the same day of the leaked copies, let alone it's extra ending/endings.

Also, adding to that final bit of Wikia Contributer 175.159.163.39 there is indeed a chance that the information given is misunderstood, there are also sources who claim that you indeed play Big Boss and that Ishmael is the Medic. Ishmael already having completed the plastic surgery to look like Big Boss, but the hospital being attacked before surgery could be done on Big Boss himself. (The theory goes that Ishmael was meant to be the double, hence his face is intact and fairly scarless and that Big Boss was to be given plastic surgery to look like someone else, however the hospital attack happened before this could be done). Further more, the entire beginning of the game is apparently to make you doubt whether you're Big Boss or a body double and later scenes only further this.

So all in all, while the leaks may be trueand while Samual (Spainkiller) can be seen as a reliable source, there is just too much inconsistencies for any real confirmation.