It boils down to say the difference is just capital.
Isn't that just normal? Why would someone expect a huge gain when their capital is only small. Trading is not gambling where your 100$ could turn into a million if you're lucky. Let's not be jealous to others who are making huge gains in trading crypto because their financial capability is not the same as ours. We should just focus on how to be a profitable trader. If you are able to become one, your small capital can become huge after a year or so.
What you have said is the real view of trading as the profit depends on how we manage it and the amount. More capital will possibly earn more which we don't have a reason to think about earning $10k from a capital of $100. Perhaps, there is no easy money here, we can't multiply our money fast by just having a small capital. That is why investors keep adding more funds as that is the only way to multiply their money and earn more profits.