Overall I would agree with you on that point. As long as someone has common sense and basic critical thinking/analysis skills they can judge vehicles even without playing them (sadly a lot of the playerbase lack one or all of these).
I think what triggered the original post you replied was more Morvran’s history of overstatement of vehicle capabilities than it was him not having played it.
I only play arcade mode, and I believe increasing the BR won’t improve the balance at all. In arcade mode, the 2S38 can even outperform some missile anti-air vehicles with its proximity fuse and rate of fire… I can’t understand this level of strength. In comparison, the American HSTV only has 26 rounds of ammunition, and when I play HSTV, there’s no room left for proximity fuse ammunition… For me, removing the proximity fuse ammunition from the 2S38 or reducing the number of rounds would be enough to achieve a balance adjustment🤨