Having read avidly all the stroies of the Second World War and all the well written tales of daring do in the weekly comics, I think I knew what the problems were with lots of the kit on both sides.
I can see one obviously vulnerability in the Vector and it isn't mines or bullets or anything sophisticated.
Now a BMP looked a rather better design notwithstanding its weak points which, 40-50 years on, could be designed out.