And yet, you're sitting here arguing that you shouldn't take the Huncback if the Atlas is available.
You appear to be arguing two mutually exclusive positions.
I'm not sure he is, he seems to be arguing in lieu of people who would make that statement (in error) and presenting some interesting analysis as to why there may be a point.
I've been trying to avoid niche cases like this that are dependent on loadout. This is the reason I try to stick to simple examples trying to get my point across ( and perhaps i've done a poor job at that so far)
My simple example is Centurion Vs Orion because they have the same speed, similar hardpoint variety and quantity (orion simply has more iirc) and the orion obviously has more tonnage for armor and weapons. It is better simply by virtue of being a direct upgrade. The centurion has the advantage of initiative but I can't quantify that advantage to compare it objectively against the advantages the Orion brings.
Well, I'm getting your point (I think), I just don't agree with it after you start digging down into the specifics. Generally, and from just a surface appearance, you might be able to point to these things and make a case. Once you get down to business, and a deeper analysis . . . it starts having cracks here and there. But let's look at the Orion vs the Centurion, because you have an interesting point here. (I'd also say a similar case is in the Panther vs Griffin 1N.)
The Centurion has an arm-mounted Autocannon vs a torso-mounted Autocannon; there is, I believe, an aim bonus to that. It also is, for the most part, better at managing its heat than an Orion. If we assume we abandon stock loadouts, then we run a risk of having the analysis spin off all sorts of directions culminating in the following statement. It is true you can mount more in an Orion than a Centurion, but it will be in different locations and that may matter. There is a considerable danger in arm-mounted weapons being stripped, but I expect there is a much more dangerous case to be made for torso weapons getting stripped (along with arm mounted weapons)
But there is one detail which is important. The Centurion gets to act, almost universally, before the Orion does. The Centurion, therefore, does get to set more of the engagement pace in the hands of someone who knows how to leverage that. The Orion can still take the pace of the engagement back, but it then takes a knowledge of what the Centurion can do through its initiative turn. In the hands of someone else who has done a lot with the initiative, in a one-on-one within the mission parameters I'd still put money on the Centurion for taking out the Orion as there's the chance to be really devastating due to having the option of moving first.
This all starts going out the window when you look at it beyond one-on-one, and start looking at lance mechanics and design principles, since you're not fighting a lone duel. While you're messing with a Centurion, the Centurion's buddy the Commando has begun a missile barrage into the rear flank with your Autocannon.