Forum:Solar Flare Dragon and Legendary Fisherman

Question:

Why is it that while Umi is in play and Legendary Fisherman is your only monster on the field your opponent can attack your life points directly, but when using two Solar Flare Dragons on the the field your opponent can't attack?

Citing the site for evidence:

If a face-up "The Legendary Fisherman" is the only monster you control, when your opponent's monsters attack, they attack you directly.

If you have 2 "Solar Flare Dragons", or a "Solar Flare Dragon" equipped with "Raregold Armor" and another Pyro-Type monster, your opponent cannot attack.