I have no theory one way or another but it is importnat to note that online sites are not regulated.

When I play roulette/slots for fun at a B&M, I only do so in AC or Vegas because they have the toughest game agencies in the world. The agencies have the authority to show up and randomly take a machine/wheel and inspect it. Not so in other areas (riverrboats, Indian reservations, etc). So, an online site based in the Philippines or whatever can pretty much do what it wants. Now will it do so? I don't know. But it can.