User blog comment:MarineroLelouch/Power Ranking and Classes./@comment-92.96.32.189-20140215151525/@comment-24066070-20140215184259

If Weisslogia was the first Dragon to train a DS, then he should have made Sting stronger.

Sting even "bathed" in the blood to get stronger, but still couldn't do jack against the Dragons. Although it could be that Sting is simply less talented or didn't fully mature his powers yet.

I do wonder why Weisslogia wanted Sting to kill him. If Sting only needs to come into contact with blood, then simply injuring Weisslogia would be enough.

If the powerboost from bathing in blood only occurs when it's the blood of a dead Dragon, then it is impossible for Weisslogia to have raised earlier DS in the same way he raised Sting, since the earlier DS would've killed him already.