Cab sav vs Zinfandel?

So the last two bottles of red I've had have been a cabernet sauvingnon and a Zinfandel.

I found the cab a little boring and one dimensional, although a perfectly pleasant wine, and the Zinfandel was a party in my mouth of diverse flavors and scents, with a rich depth that reminded me more of port than wine.

Is the difference between the two more a function of wine type, or is there typically that much diversity between "good" and "average" wine? Cause if i could just drink varying Zinfandels and get the party in my mouth that would be okay with me.