The first one is absolutely true. Most elliptical galaxies consist of very old stars.
The second one could be true in certain circumstances. Spiral Galaxies can have many different shapes and sizes and do elliptical. I'm not quite sure it is correct to say that elliptical vary more.
The third...
I know that North Korea's army is substantially larger than the south's but its equipment is way less advanced. As far as the south, they have extremely advanced equipment. Therefore who is stronger, or is it a dead tie!