They are the same in the sense they use the same algorithm with different parameters.
But of course they are not the same in the sense you transfer Dogecoin to a Bitcoin address, of course
And which do you think is more favorable among bitcoin, dogecoin, and litecoin?
What a way to get between litecoin and dogecoin same as bitcoin ??
bitcoin is the most used, don't even care about the other, bitcoin is already struggling enough to get accepted, oither altcoin will never be accepted
also they have a less secure network, because the hashrate is not as a strong as bitcoin