Crusades in Catholic Education

I ran across an interesting link leading to a Catholic education website. The specific link I provide here is the website's section on the crusades. Unfortunately, the website only provides a brief summary of the highlights of the crusades as a whole. One thing did stand out right away though. The Christian leaders are definitely portrayed very heroically and almost surrealistically. Does the Catholic education source provide biased teaching material because of the religious factor? You check it out:

http://www.catholiceducation.org/articles/history/world/wh0010.html