Q:
Significance of Red Boss Skull Icons?
Well, since you specify Tequatl, he is a tougher fight than most world bosses and does reward players commensurately. You get two gold in actual coin from Tequatl, along with three guaranteed rares and around 18 other items which will be at least greens. So his icon being a different colour than, say, the Fire Elemental makes sense.
If Triple Trouble has the same red icon, then that’s holding true to form, the stronger/more rewarding bosses have the different coloured icon.
True, Teq. is harder but the Karka Queen is also red and that’s just a tradition ‘tank and spank’ pretty much.
I now wonder if it’s because there are APs for them .. though the Behemoth’s icon is orange his map circle is red, so .. hmm.
KQ is just an example of Anet’s laziness. They never updated the red skull or bumped KQs fight to be more in line with Teq.
Crystal Desert
True, Teq. is harder but the Karka Queen is also red and that’s just a tradition ‘tank and spank’ pretty much.
Like Tequatl and Triple Trouble, Karka Queen also gives more loot than other world bosses. She gives two guaranteed rares, and three bonus champ bags (along with the one on her corpse if you’re quick enough to tag her). She also shares the same lengthier spawn timer as Tequatl and Triple Trouble. As a final similarity, she can be spawned as a “Guild World Event” like Tequatl and Triple Trouble.
The difficulty isn’t there, but Arenanet has classed her as a ‘mega boss’ regardless.