A. you're spoiling, the jutsu you mentioned hasn't appeared in the anime yet.
B. Byakougan gives you the ultimate taijutsu.
C. They probably meant that Byakougan has better insight than Sharingan, as said by kakashi while explainig about the Byakougan..
D. Narutofan is a FAN site, they don't nesscirally know what they're talking about.