Gamblers who have huge bankroll most of the time thinks that they can comes out with decent profits, trying to keep playing while funds still doing great and some lucks gives them hint, but in the longer run those lucks start to fade and losing streaks begins to show up and with aggressive approach this gamblers will only realize that everything was gone and busted.
I will think of the opposite, gamblers who have decent bankroll are more discipline and compose than those who does not have.
here's what I believe.
Gamblers with huge bankroll are strict with their bankroll management, they focus on the long term profit using their consistency in gambling.
Gamblers with less bankroll are usually aggressive because they like to grow their money in many folds thus they are taking a huge risk.