What task/s can IE perform better than Firefox or other browsers?

http://en.wikipedia.org/wiki/Breastfeeding
IE took me to the first sentence under “Infections”. With Firefox nothing happens. I tried it using the keys Ctrl F and going under the Edit—>Find
I tried it in the same computer same OS same everything.

Added after a few answers: I found the Find dialog box at the bottom left of the screen and it found the word as well.