The thriller aspect and the main leads' dynamics are similar in both dramas. Even though both dramas have complete different plots, if you liked one you'll like the other for sure. Both stories revolve around the male protagonist who is trying to take "revenge" and in the process, meets people that help him.

So far, Vincenzo has more romantic moments between the leads whereas Mad Dog didn't have a explicit romantic line but the sexual chemistry between the leads were to DIE FOR.

P.S Mad dog is truly a fantastic drama I suggest everyone to try. It's an all-time underrated gem