before saying that the vikings would be apocalyptic to Asia.
I'm sure he was joking, as around here vikings are held in high regard.
Medieval European weapons were good quality but the Chinese crossbow was invented somewhere in 200 B.C while the medieval periods are about 1300A.D
My point was that Europe has become a technological powerhouse over the last 1000 years. Few of us will deny the long held technological superiority of the Chinese, but it the dominance of the Europeans has been far longer than 300 years.
You talk of the crossbow, but the medieval European crossbows are different to the Chinese crossbows, and it's only one piece of technology. We know that the Chinese were advanced at the time, but you simply can't compare them to medieval era equipment.
As for medieval European weapons being good, no, they were of excellent quality, at least equal to anything produced anywhere else in the world. The European armour was in another league altogether.