I think a lot has to do with people's focus on ITS. Within that particular system a couple of things are stronger than other things. Infiltrating specialists, cheap specialists, high AVA specialists, high mobility (4-4), lots of orders, order-efficiency (linkteams).
All things that are considered strong in an objective based game, that requires specialists to operate the objectives and which takes orders to spend actions, and movement to get to the objectives.
The current ITS has become a system favouring netlisting; trying to figure out if you can use model A that has 4-2 movement to the same effect as a model B which has 4-4. But we're already sure that model A is overpriced, because it's a MI, it has higher armour and probably a tool or two extra. That cost forces you to take another model out of your list, which would deliver you an extra order. So now we have a dilemma; do I want a tool unit, that can counter things and perhaps grab an objective if it reaches there 'slowly'.. or do I want a 4-4 specialist that can take an objective and gets an extra order to do so?
It's a trend to consider everything that doesn't check all the right boxed subpar or overpriced by default.
I'm not saying there aren't any models that suffer because they do not fill a clear spot in an army, or pay too much for what they bring. One I can think of is the
Azra'il FB, which in N3 had the same price as the AP HMG profile, but.. mathematically seen, both profiles did not put the same efficiency on the table. Which in this case would be the # of dice rolled.
Or the
Sekban pre-HSN3, which were competing within their own sectorial against
Kaplan (price, weapons, survivability due to mimetism)
Odalisques (price, Haris, also 360 visor and NWI) and to a lesser degree the
Djanbazan (regeneration, MSV2), which all ranged around the same prices. But most other units checked the righter boxes; Kaplan had mimetism and could put up a lot of high WIP specialists. Mimetisme does more to survive shots than higher ARM does. NWI allows the Odas to fight after a lucky hit. Both Kaplan and Odas are LI, which made them faster than Sekban. The Djanbazan were a great anti-camo unit that could regenerate.
The only thing people could agree on, was the fact that a choice between Sekban and
Druze would favour the Sekban more, as 360 visors allowed for a better ARO phase. Also, if you had a Tohaa filled meta, Sekban would shine, as it was the only place to get long-ranged fire in QK.
*there are multiple threads, going on and on for pages about the Sekban and the Azra'ils over at the official forums*
Mind you that playing Infinity like this is a choice, and not a wide-spread believe about how this game should be played. A lot of people consider units great on their own and allow them to work for them, and in many areas ITS is falling out of favour because of its favouring of netlisting stuff. The current situation is far from the pre-Paradiso 'take whatever you want in your list and have fun' attitude that has continued underground.
Each his own, of course.. but this current attitude is not the way I, personally, like to play this game.
To answer your question about MAF: MAF misses out on almost all things that are considered 'amazeballs' within the ITS system. Their profiles pay a Morat tax, they do not have cheap links, many link-options only work for 3 models, otherwise it becomes too expensive. They do not have cheap specialists and due to the price they can't deploy lots and lots of orders. Even their line-troop is one of the most expensive, and they have a pretty standard line infantry statline. They lack sufficient, cheap and specialist infiltrators.
So in a way, most of MAF does not shine within the ITS system.