I am going to lump the BMW R1250 GS/GSA/RT into one as they have a lot of overlapping riding characteristics.
Low speed riding
I don't recall seeing anyone talking about the low speed balance of the BMW GS/GSA/RT.
I do not think any other big bikes can feel this easy to ride slow in urban areas; certainly not the AT due to the weight being higher up. The design of the BMW for balancing the bike is head and shoulder above all the none boxer bikes. It simply is and you need to, at least, test drive it for a few hours to feel it, if you have never ridden a GS/GSA. I encourage you to do it so that your experience is fuller and what you say comes from your experience. I would say my RT is slightly better than the Goldwing in balancing at low speeds. I cannot explain why but I'm telling you my experience ... may be the 800lb weight of the Goldwing vs the 600 lb RT?
Of course, you can say that I did not buy a bike to ride it under 25 MPH and I agree with you but you & I have no choice when you ride pass towns and villages on a long distanced trip or when you are going to hit a traffic jam on a freeway. Surely, you need to park in a parking lot when you want to stop for a meal.
Fueling precision
It's not just the weight being way down low that made it the king of riding slow, it is also the highly precise fueling of the right hand twister. Somehow, BMW favors a larger twist:fueling ratio compared to the AT. By larger twist:fuel ratio, I mean to say that the twister need to be twisted more to get the same fueling compared to the AT. This provided a finer granularity of control for the fueling. Because it provides more control over fueling, the bike felt extremely smooth to control at low speed and there is zero jerkiness when I add fuel.
To explain it further: say I return home from a ride, on the front porch. If I were on my BMW RT, on 1st gear, I can simply apply fuel and move the bike into the garage very safely without issues because of the precise fueling.
I would not do that with my Goldwing or AT because imprecise twister produces a lunging effects. For the Goldwing, I had to switch it over to Walk-Mode and duck-walk into the garage. For the AT, I hand push it in. This behavior is also the same in my previous Honda VFR1200XD.
Sadly, one of the glaring weaknesses of the AT is low speed fueling -- it is quite jerky --- same as my Goldwing.
Apparently, Honda said that they improved on this for the 2024 models. I have not tested them yet so I cannot confirm this.
Comfort
Comfort wise, there is no comparison between an AT and a GS/GSA/RT; the BMW wins hand down.
Badness
The downside of BMW has been discussed many times above but here are my list:
- costs (of the bike, parts, service)
- no service manuals published (corporate BMW decided this a few years ago)
- annoying issues every now and then
- design issues which corporate BMW tries to cover up and adamantly marches on; e.g. shaft encasing for their GS/GSA/RT have 2 large holes on the top with rubber boots. Those boots are not waterproof; thus, allowing dirt and moisture to enter causing corrosion to the shaft. This issue does not exists in shaft drive designs from Honda and Yamaha because their shaft encasing is completely sealed. ha ha ... this design flaw is carried over to the new BMW 1300GS, GSA. We shall see how long before class action law-suits starts. The band-aid which BMW provided is that they have revised their Owner's Manual for the 2024 onwards to reflect additional "maintenance" items the owners need to pay: shaft testing, shaft lube and a $2,000+ shaft replacement. I'm sure we are going to hear a lot of moaning in the next few years. They are covering 2023 and older for free.
Weight Issue
As for the weight and physical size of a GS/GSA to go off-road, I am not sure if any of you are watching the BDR org marketing videos every time they release a new route for BDR. Almost all of the bikes in there are GS/GSA. May be BMW Motorrad is a large sponsor of BDR but their bikes are almost always on the foreground. So, are BMW GS/GSA suitable for off-road ? Depends on who you ask.
Adam Riemann also thought the Rhino was good for off-road, too. But, he is not a regular rider, I have to admit it.
So, at the end of the day, there is no free lunch, so to speak.
It depends what you want, what you are willing to give up in return for something else.
The Africa Twin and the BMW R1250GS/GSA have their goodnesses and their downsides.
You have to choose what you can live with and what you cannot.