I used to work for British Airways , airside at Terminal 1 , Heathrow dealing with lost or delayed luggage.
Perhaps , under normal usage Samsonite luggage is good but when thrown around by baggage handlers it's weakness was revieled.
The problem with all ' solid ' type luggage ( many brands ) is that their rigid construction has no play in it. Many times I saw this type of case pop open ( even when locked ) If dropped vertically on one of its corners. If the case was not heavy not a problem but if the case was densely packed and heavy then if dropped on a corner the lock would somehow pop and the contents would be thrown out.
The case itself might not be much damaged by this treatment but not much use if it's contents are scattered.
After years of seeing this I chose for myself non rigid shell luggage.
Just my opinion based on observations at work.