User blog comment:Retro7/Fairy Flush Reviews: The Perfume Dedicated To You/@comment-108.64.95.171-20120727185321/@comment-904888-20120728082513

That comment has NOTHING to do with whether or not Skydrum/Weisslogia is alive or not. Igneel asking them about whether their sons are better than his own son Natsu doesn't suggest anything about them being alive, since there isn't anything else in Igneel's frame that shows any other entity. So for all intents and purposes, they could very well be dead, and it wouldn't affect Igneel's comment.