You are right Ron, and so am I. I may have not explained enough, an odd problem for me, who writes/talks too much. Been riding two wheels and trikes daily for almost three years now.
I have three schwinn meridians. Two are in daily use at work. At my condo maintenance job I always said I needed a pickup truck three feet wide. (narrow streets) I haul incredible loads every day, often using a garden cart as a trailer. When on foot, we have a saying at the condo's, two laps around the place is an hours pay. The trikes at work increased the maintenence workers productivity incredibly. At slow speeds on flat streets in the condo's they are the ideal vehicle.
But those trikes don't haul ass all over town.
The third trike was my very first electric bike. Choosing poorly in ignorance, I put a fairly fast brushed motor on it. To increase range and ability to climb a hill, I put a 48v lead acid battery on it. So right from the get go I had 40 pounds of cargo. This no doubt made it easier to bend rims, etc. It may have also affected the handling. In any case, 30 mph on it was not too safe. When you needed to swerve, glass in the road, jackass parked long at the stop sign, whatever. It just was difficult, not impossible, just difficult to get over enough to not decorate a jerks hood.
So in a way, you betcha, the problem was the rider not the bike. Same thing with the sloped shoulder, a much bigger problem with more speed. I took the trike kit off that bike, installed a rear derailur, and had a fairly nice beach cruiser instead. But on my 30 mile rountrip to work, my back just couldn't stand those big bumps on the bike trail without suspension, and I was still bending the rim and breaking spokes on the rear wheel. Again, hauling ass was the culprit, combined with the route.
So it just depends on exactly what the original posters needs are, how he'll use the bike, how fast the motor will make it go, etc that makes the difference.
The trikes can be incredibly usefull machines, and it sounds like he has the trail system to make it good for a trike. Just choose a motor system that has lots of low speed power, and not one that goes 30 mph is all. 20 mph is fine on the trike on level ground with nobody in a car backing out into your path. I always thought a gearmotor on the trikes would be perfect. High Teck Bikes, (HTB Terry) sells a good one. Especially if you can get a three speed switch controller.
Then you have good pull, but not excessive speed for a meridian trike.
The Schwinn meridian is a good bargain on a trike, but fwiw, the rear wheels are crap. After 3 years use, even the ones at work that never ran more than 10 mph are bent to hell, despite many retruings. We do have speed bumps there at work though.

So put 100 pounds in the basket, and rims get bent. A worksman trike, at three times the cost, has much stouter wheels. So maybe figure on needing to relace the rims on a meridian at some time.