Wiglaf... think for a moment. Why would he admit to knowing who you are? Actually, use your memory, his first words to you were "get away", he called you a git, laughed at you being abandoned, and then walked away. After all that you chased him, surprised him by initiating contact, and invited yourself to his adventure.

Let's just say that, given all that, I can honestly understand why Camlann said you barely passed the test of being pure of heart. And have to start wondering how broad the criteria for "pure" are for you to have successfully passed.