Dont understand the hate here.
The Johnson LMG isnt good at all. As @Yamoto4299-live says, its only got 20 rounds. Personally Im not a fan of the sights either.
The Germans at BR IV get the MG42 one of the best LMGs of the war, with 50 rounds. The Japanese have the TE4 which shoots crazy fast and has I believe 47 rounds? Might be wrong but its definitely a lot more than 20.
Personally I would folder the Johnson LMG with the BARA2 at BR III.
As for USA not having a BR IV rifle or LMG then, well I strongly believe thats a larger problem with BR IV rather than the johnson itself.
All the factions have weapons that should be in BR III or V, respectively, or some that are arguably OP for III but redundant for V.
DF needs to work BR IV out either adding a lot more content for all factions and letting BR IV be its own thing (maybe occasional uptiers for BR III idk) or get rid of BR IV completely.
I would argue that BR IV only really exists because of tanks. At the moment as Ive said theres a couple infantry weapons here and there for each faction at BR IV but they are just asking for an uptier to god mode BR V with jets and crap at which point they become rather pointless.
For instance the Kiraly SMG, yeah great gun but if you equip it chances are youll be up against BR V so why wouldnt you just use an assault rifle at that point like the Mk42 or STG44?
I am aware its too late now but Im so annoyed this game went to BR V it was a terrible idea and theyve tried to stretch everything out across 5 BRs and it just doesnt work so we get unbalance and all these fantasy prototype crap (the Japanese M2 carbine is entirely make-believe which is just sad)
But yeah if the forum has suggestions for more BR IV content that is actually reasonable at BR IV we are open to hearing that, otherwise DF needs to get rid of BR IV and just make sure BR III and BR V are isolated from each other.
Some have suggested BR IV should be the new BR V as a mostly realistic late war BR (separate to BR III) and then let the current BR V be the ultra late war fantasy prototype jet fighter land.