On the basis of transparency, I think both are similar because if the physical can be rigged, the only can as well be rigged. At some point I was thinking that it is the physical casino that is easier to rig but a second thought just showed me that both can be rigged.
Being it physical or online casino, as long as the casinos have the backend to their servers, I think they can do what they want to favour themselves. Although the transparency of a casino has a lot to do with how well they’re being trusted in issues like this because their transparency speaks a lot for them when they’re been alleged of manipulating and rigging results. Bad and good reviews on a casino speak well of how transparent and trustworthy they can be when playing games on them.