Mc2Guy is right. The seating position is so much higher in most MH that you are seated looking down at the beam of light. But it is this seated position that provides such a superior field of view when driving the MH as compared to most cars.
If the car you drive regularly seems to have sufficient lighting, try this. On a dark evening pull your MH onto a street and turn the headlights on. Then pull your passenger vehicle up next to it, about 10' to 15' distance between the two. Now get out and walk to the front of the vehicles and see where each headlight pattern strikes the pavement. If it is similar, then you know that it is a perception issue from your seating position. If there is a marked difference in pattern of light or brightness in one or the other, then you know that there are other issues to fix.
Of course the normal warnings apply here, don't do it on a major or busy street ect.
Sorry, had to throw the disclaimer in before the flamers jumped in!