Bottom line of what I'm saying. The 30mm is a single vulnerable ace in the hole. Take it down and they don't have much to show for

I've played almost 600 hours, but like you said these are just my experiences as well. And I have no reason to force them on you.
I never said that 30mm and strykers are equal one on one. I've said quite the opposite. It's just that it's balanced in how two strykers will always win against a 30mm even if one of them dies. And then as soon as the 30mm is out of the way you can have a rampage on the map with the rest of the strykers at least until a new 30mm spawns for the opposite team.
What I meant about extreme range is that strykers have better scopes, rate of fire and ammo count making them manage to hurt the BTR's first which further forces them to pull back before they can get enough good shots at the strykers. Extreme range almost never give any decisive victory but it's at least usually the BTR's that must smoke and pull back first.
IF you're a single stryker against a 30mm you can still win, but you have to be smarter and craftier, and have a good dose of luck.

Insurgents win on Al-Basrah because attacking up a highrise with a single staircase with a HAB on the top floor one of the most godawful braindead things in this game. That's it, it's not because of anything else.

There is no mounted weapon dropoff vs vehicles. Any difficulties you have on long ranges are your own, BTR still rapes the Stryker. I don't know why you're still defending vehicle balance. Think about it this way - it takes a two competent Stryker crews (52 tickets) to fight against a single BTR (30 tickets). Even then, the BTR will trade against one and do damage to the other.

I'm clearly not going change your mind, I don't know how long you've played the game but these are my experiences with it. I don't want to keep arguing about this over steam comments.

US will probably still kill more on Al-Basrah, I don't disagree with that. But they have much more difficult flags to capture, and in my experience the insurgents win more on that map because of it. RPG's and tons of AR's on the insurgent team level the playing field as long as they stay out of long range stykers or have some very good scouts/SPG fireteams.
I didn't say the armors were equal. Just that ONE 30mm can't deal with the strykers, and that the strykers can easily deal with the rest of the regular BTR's. It just forces the opposite teams to use different tactics. Strykers and 30mm's are also actually quite equal on very long ranges. As a 30mm I often have difficulties with strykers on for example Kohat, and likewise an easier time if I'm in a lone stryker on the opposite team.

I was interested in Hell let loose at first when I found out about it a month ago, but it seems to me more like Heroes and Generals than I'd appreciate.. I'll definitely still keep my eyes on in though

I often take down Strykers as a BTR. In fact, I've never lost to a Stryker or a Stryker team as a BTR before. Both sides can hear engines and the BTR is mildly faster than the Stryker as well. We can compare anecdotes all day, but the fact is that a BTR will always win a 1v1 against a Stryker. A BTR is also only four tickets more than a Stryker.

High tech factions don't "lose" the upper hand in urban engagements like Al Basrah, at worst they are equalized. In fact, the red dot on Americans helps a lot more in CQB than Ins AKMs. Not only that but mounted .50 cal and 30mm can wallbang buildings all day with little risk to themselves. You even said it yourself, Ins are the worst faction and they have no redeeming qualities to make themselves better other than cheaper HABs (which in practice doesn't mean anything, because they're still limited to FOBs).

I am keeping an eye on Post Scriptum already, but thanks for the heads up. Hell Let Loose is also interesting.

You should check out Post Scriptum when that comes out then.
Also I absolutely still think that Russia vs US is very balanced. I often take down 30mm BTR's with my strykers. It depends a lot on situational awareness of the opponent and if you manage to ambush it or not. Strykers should also work together.... If they split up too much then the 30mm can take them down one by one. If they work together on the other hand they can wipe all the enemy vehicles from the start of the game until the end.
Insurgents are awful, but that's how they're supposed to be. The high tech factions however lose the upper hand in urban warfare.

I guess that's where we disagree. Other games have asymmetrical factions that are balanced. Squad has asymmetrical factions that aren't. Most egregious are BTR vs Stryker and how awful the Insurgent faction is.

Because of the day and age of course. IF squad had WW2 setting it would've also been the same. Russia VS USA is balanced in this.

We're not talking about the same thing. I'm not unfamiliar with asymmetrical balance. RO2/RS and RS2 have asymmetrical factions, even moreso than Squad. However, they do it better in that they're balanced much better. Squad has asymmetrical factions that are balanced poorly.

Asymmetrical balance = intentional unbalance. Still a pro in my eyes. I don't like teams, equipment and maps that are identical on both sides. And if you win as the underdog then the feeling of achievement is just better.
I still feel that more than half of my playtime is from even matches. Maybe thanks to how uneven matches usually end fast.