The common trait is the nose dropping, unnoticed, during an increasing-bank turn with no apparent attempt to roll off the bank. You may well be right by saying "and make a better display" but the fact is none of those pilots realised it until it was too late (Perth Mallard full-right roll control on impact).
Crash of a Grumman G-73 Mallard in Perth: 2 killed | B3A Aircraft Accidents Archives