The moon isn't as far as the sun.
True! The sun is much farther than the moon.
Mars isn't as far as the moon.
False! The moon is 384,400 km away while Mars is 328.3 million km away!
A hamburger isn't nearly as expensive as caviare.
Correct!
Meat isn't as healthy as tofu.
True!
Tennis isn't as popular as football.
True! Football (soccer) is the world's most popular game.
China isn't as big as Italy.
False! China is 9,640,8212 sq km; Italy is 301,318 sq km.
Cotton isn't as soft as silk.
True! Silk is usually thought to be the softest natural fibre.
Bungee jumping isn't nearly as frightening as golf.
False! Most people wouldn't find golf frightening at all.
Nine kilometers isn't nearly as far as ten kilometers.
True!
Rome isn't as old as New York.
False! Rome was founded in 753 BC; New York only dates back to the early 17th century.
Rubies aren't as expensive as diamonds.
True! Diamonds are the most expensive popular gems.
Five-star hotels aren't normally as expensive as two-star hotels.
False!
Monkeys aren't as dangerous as tigers.
True! Tigers eat people; monkeys don't!