Treat both with the same love and respect = completely different outcome
Properly raised dogs are loyal, relate to human behaviour and emotions like no other animal, and are overal very cheerful creatures.
Cats are more self-centered, they have instincts and routines they follow (including how they show love) but they don't relate.
I have a cat for 17 years. I know every move he will make based on his body language (okay, now time to play. Now time to rub my belly and purr for 5 minutes. He will stop purring in about 10 seconds, now time to leave. And so on)