Lovely Mixture said:
I might've misunderstood something, but I don't think Shirou and Kiritsugu were that similar at all. The way I saw was that kiritsugu gave up on the ideal Shirou has before F/Zero or atleast he changed it a lot, it wasn't about saving everybody anymore, it was saving as many as possible, a really for the greater good mentality while Shirou had the must save everybody at all costs.
Ofcourse Kiritsugu's end goal(wish) was a world without conflict, wasn't that the whole point with the end of F/Z that the grail could only give Kiritsugu his goal the same way he would be able to gain it, by sacrificing people over and over again until only those precious to Kiritsugu survived then with only them left there would be a world without conflict.
In my opinion Kiritsugu and Shirou were two fairly different characters, Shirou took over what Kiritsugu's childhood ideals were which was the entire be a superhero and save everybody mentality, since that was what Kiritsugu told him he had wanted to be when he was young, he even said and then he grew up.