The Shepard reference is a tribute to this bloke....
http://en.wikipedia....ki/Alan_Shepard
If Shepard going round the galaxy is buliding an army (Lets say that again, army) is like what Jesus did in the Bible then the Warden from Da:O was also like Jesus.
Did I miss the bit in the Bible where Jesus united the people of the middle east into a masive army and chased the romans back to Italy?
This is a pretty hilarious example of people desperately searching for vague simalarities between two "characters" (I use the word character for ease of explanation) and ignoring the massive, massive differences.
Yes, on the surface there are some basic links between the two, but when you actually think them through it makes no sense.
I feel like I'm banging my head against a brick wall here, You can make an argument that Shepard is an allusion to Genghis Khan.
Khan, like Shepard a great military leader, united the tribes into a coherant military force, solving political disputes, he was tolerant of different religeons as Shep is of the ME equivilent, Alien races.
Like Shepard at the end of Me3 he is almost a legendary figure, like Shepard accrding to the epilogue many of the details of his like are lost.
And living at the time he did as part of a nomadic tribe Khan was almost certainly .... a shepard (of sorts).
Again, the point of this is not that Bioware were referencing Genghis Khan when they wrote Shepard, but that you can make the sort of links people have made here between any heroic figure.