Hi Strategists
What does RNG stand for?
What are the differences between the 2 USF weapon upgrades (BAR and the doctrinal one), which is better in which situation?
RNG stands for "Random Number generator (generation)" which basically implies an aspect of the game is involved in a simple roll of the dice or "luck". This is not entirely correct as this game uses controlled RNG often termed as Pseudo-RNG which selects values from a specific range (an example is the damage of an AT grenade, it can either penetrate, deal damage and cause an engine critical or it can be deflected and cause deflection damage. The game decides for you which of the above scenarios - there are others - will be chosen depending on a number of in-game factors).
The BAR is a non-doctrinal weapon upgrade that costs 60 munitions which is designed to be utilised as a short-range weapon with your riflemen. Without going into too many details, it significantly boosts the DPS (damage per second) of your riflemen in short-range engagements.
The M1919 LMG is the Infantry's company 3 CP doctrinal weapon upgrade for your riflemen which also costs 60 munition but is designed for longer ranges. Currently, it outperforms the BAR and even suppresses infantry with defensive stance so I would argue that it is just a straight up better weapon in general (albeit being doctrinal).
Is the Red Army AA-half-track worth its price, as it doesn't seem to suppress and doesn't do big damage to infantry and couldn't shot down a StuKa flying above it for minutes, of was it just bad luck?
The M5 half-truck is a great anti-infantry support vehicle that provides a forward reinforce point on the battlefield. It's AA damage isn't the best but it is capable of taking down planes. It's not particularly reliable in that sense but is the only dedicated AA Soviets have besides the HMG gunners on tanks.
If prestige means your level is +100, what does it mean to my, that I have to fight people over 100 levels over me? (I am lvl 75 my opponents around lvl 25+prestige -75+prestige)
That's the way automatch functions; if a game for your ELO is not found, the search is expanded to a pool where you may be matched up with anyone in the interest of finding both of you a game to prevent long queue times. Prestige simply shows an equivalent figure of how much time a user's played the game, not necessarily how skilled or highly ranked they are.
Do you think it's ok if I justify a defeat by blaming my bad PC and the disadvantage of starting at least 20 seconds later (I am not complaining towards my opponent)?
No, you can offset a disadvantage and consider that when you're reviewing the game to improve but solely blaming your loss outright on 20 seconds absence or your bad PC is not a good mentality. If your performance is bad, improve it through tweaking/upgrades/updates etc so you're playing at a FPS that you can perform at your best with.
Hope these helped.