What causes this opinion for you?
I have slide in ramps, so I don’t know about either version.
Mega ramps are shorter, which causes the angle to be steeper. Also, the dovetail on my trailer is 1' longer than the same trailer with standard ramps (I lose a foot of flat deck and gain a foot of dove). This also makes the rear of the trailer hang lower and more prone to dragging on uneven terrain.
The steeper angle means I cannot load cars, vans, or small SUV's on my new trailer like I could on my last one with standard ramps. I'll have to carry ramps to back the rear of my truck onto now, to raise the front of the trailer and reduce the angle of the ramps.
Mega ramps are also much heavier. My trailer has two sets of springs per ramp, vs. only one needed for standard ramps. Also, all that weight takes away from the trailers payload.
Standard ramps can be removed and installed all by myself. Mega ramps are a 2-person job. I can, and have, had to remove my standard ramps in the past for long loads that didn't fit. I can also remove standard ramps and use them as ramps elsewhere, away from the trailer.
With mega ramps, I had to add snow plow guides to the rear of my trailer so I could see it when backing up empty. With standard ramps, the ramps are up to see.
On uneven ground, the width of the mega ramps makes it much easier to twist them when loading a heavy piece of equipment. This has not proven to be a problem, yet, but it's one piece of physics that applies that's always in the back of my mind when loading & unloading.
Mega ramps also hold more dirt & gravel in them. This is highly dependent on the manufacturers design of course.
There's only two benefits of mega ramps I can come up with at this time.
1) Loading tricycle tractors
2) Converting the dovetail into usable flat deck.
Yes, different manufactures use different designs. Yes, these are just my opinions.
