Vaughn wrote in :

On 5/3/2015 10:10 PM, Skywise wrote:
Although liquid hydrogen has nearly 3 times more energy per
unit weight, that does not take into account the mass of the
containment vessel. A liquid hydrogen tank is going to more
than 3 times as massive as a gasoline tank or fuel bladder,
thus resulting in a net loss of energy per unit weight of the
fuel plus it's container.

I'm not sure where you got that information from, but it's wrong.

http://www.tinaja.com/glib/energfun.pdf

The numbers can be confirmed by other sources.

But I think you misread what I wrote.

Brian
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