As far as I’m concerned, all BRs should onl play at the level they are at. New players at BR1 can’t compete against veteran players with all tricked out squads and weapons. BR5 is way too over powered for BR4 with everything but I find BR2 through 4 are like that too…downtiered vehicles slaughter, but not a lot are effective when uptiered. If you do a lineup of BR3 and have a few BR2 squads or weapons it puts you at the highest tier you are using, the game shouldn’t uptier you from there…numbers should play the same numbers.
They should add at least 3 different weapons of each type for BR5 and make it its own tier. BR4, unless they add 20-round semi-automatics, hardly stand a chance against BR5. Currently, that’s what makes the Manchuria map a disaster for the Japanese, who, by equipping the Type 2 (50) or the Type 99 MG, end up facing high-capacity machine guns and automatic rifles.