All physicists I've heard discussing gravity to the public always mentions that it's a very weak force compared to the other forces and that noone knows why. One possible reason could be that the gravitational force is propagating in other dimensions. As far as I know gravity works in a completely different way compared to the other forces. The other forces use carrier particles but gravity works by curving the fabric of space and time. Aren't we comparing apples and oranges when we are comparing the strength of gravity to the strength of the other fundamental forces?