Why is it easier for meteorites from Mars to come to Earth...?

Mars has a much lower escape velocity, making it much easier for debris to be blasted free from its surface in a major impact event.

if you mean the asteroid belt by mars and jupiter, then i think this is the right answer! asteroids float through space, then their speed grows faster and speeds past earth and to the sun.

The Sun is BIG.

Things tend inwards towards the sun, especially if they get past Jupiter.

Uh...meteors don't come from planets.