Not sure if it really worth responding, I'll still do it.

All though you might have had an unfortunate experience, I am pretty sure you are exaggerating. The way you write tells all about it.

I have never heard of a carry on that weighs less then 8 kgs (LH carry-on limit) that is stuffed with tripods, cameras and chargers.

The "Standard American" carry-on is not accepted on European airlines, sorry, check beforehand.