Bitcoin and Dogecoin are different ones.
Bitcoin has still been developed by Bitcoin core team, it doesn't matter satoshi left years ago.
Dogecoin has nearly no development, or no development at all, but it is amazing that it still does not matter.
We can compare that bitcoin having no satoshi until now but there are active developers that are working on its development. You can easily say that no one cares about that but I've read some investors that actually care about that.
For aspect of adoption, Dogecoin widely accepted by so many companies, so many areas accepted Dogecoin.
Adoption is key for cryptocurrency as a whole to become successful.
That's one amazing fact from dogecoin although having no development still being loved by the community. Yes, I'm aware that dogecoin is widely accepted everywhere and it's still one of the biggest and on the top of the rankings of the crypto market. We just can't belittle dogecoin as its considered as one of the biggest coin, overall.
It's not that Dogecoin would have to prove that or has proven it yet, of course you need adoption for success. If nobody uses / adopts a coin, how can that coin succeed? Adoption is the measure for success.
Base on what you have said, dogecoin is successful.