Currently the paras in low BR will just the type 5 launcher as AT with 100 mm of pen
but when they go into high BR they get the type 4 launcher with just 80 mm of pen.
Given the amount of armor you will see at high BR tanks it would be nice if high BR japan would get a choice of type 4 and type 5 as both have their pro and cons.
The type 4 has a sight and the type 5 has more pen which might be more usefull than a sight when hunting for more armored tanks.
Please give japan a choice in high BR as the launcher are more or less sidegrades and not upgrades to each othere