User blog comment:Httyd big fan/Twenty-Second Dragon Fight Club Match: Death Song vs. Thunderdrum/@comment-24126950-20180618223735/@comment-24126950-20180621023540

It is now widely known that the dragon stats described in the HTTYD website are dubious at best. They are usually contradictory to all other depictions of the dragons they are supposed to describe.

As for the voting, most people vote based on the popularity or depiction of a character/dragon and not ability, power, stats etc. as shown by Toothless/Night Fury winning all Fight Club encounters with 80% of the votes against overpowered dragons such as Bewilderbeasts, Skrills etc.

The concept of speed has never been clarified in the DreamWorks: Dragons series and from what I have seen any dragon can catch up to or escape any dragon when the plot demands it, regardless of stats, the weight they are carrying, their build, the circumstances etc.

Thunderdrums were indeed stated to be one of the most powerful dragons, but that was early in the first season before the discovery of the Death Song. As for the fire breathing, they were only shown breathing fire in one art piece, and in every other depiction of the Thunderdrum so far it has not demonstrate any such ability.

No doubt under certain circumstances a Thunderdrum can defeat a Death Song, but extreme conditions must be met in order for that to be the case, like the Death Song being very young, inexperienced or stupid individual, a Thunderdrum being a Titan, particularly bright or experienced, or sheer luck on the Thunderdrum's part.

The reason for this is that Death Song's are built and live to hunt and eat most any dragon that comes their way, and are physiologically superior to the Thunderdrum in every way. The Thunderdrum is immune to the Death Song's luring vocalizations, has Sonic Blasts, and is aquatic in nature, all of which give it an advantage in battle. These abilities, although powerful, merely inconvenience the Death Song and delay the inevitable at best. Two blasts of it's amber-like substance is enough to bring down and defeat a Thunderdrum. The Thunderdrum would be lucky to escape with it's life should it encounter a Death Song, much like most other dragons species would.

This is my opinion based on my personal experience with the franchise and the facts stated in this Wiki so please feel free to correct any flaw in my argument.