I know the Mossie was made out of wood...but look at the F-117. Faceted design. RAM coating. Quite small in comparison to other planes. And even it, has a SMALL radar signature. Very small, but still visible, canceling the idea of true stealth. The wooden wonder may have had a reduced radar signature, but it was still visible.
As for the FOAB. Meh, nothing special, no pretty fireworks compared to the Tsar. When a country makes a bomb that can be seen from hundreds of kilometers away, produces a shockwave that travels the Earth three times before stopping, has the capability to wipe out half a state, (in theory) nearly cripples an entire nations silk industry because this bomb alone required so much raw nylon to act as a fall retardant, and has a mushroom cloud that rises to such a height, you don't want to mess with it.