actually, from what i know, H-bomb is just about normal
explosion and i think the explosion is bigger than the A-bomb, but
it doesn't have the insane side-effects of the A-bomb, which is the
actual trump card of the A-bomb.
H-bomb is just like a super-mega TNT bomb with crazy explosive
power, and A-bomb trade-off a little of the H-bomb's explosive
power with it's signature after-effects to the human body for
generations to come, which is scarier.
also, the A-bomb's release of radioactive particles is so terrible
that it caused the sky to rain concentrated acid rain after the
explosion.
if singapore one day is going to be blasted with H-bomb or A-bomb,
i rather choose H-bomb.