I'm fortunate enough to own both.
Layout, shots and game play concepts couldn't be more different, so it's an easy answer to say "both"!
There's no crossover here in gameplay; you couldn't find two more different modern Sterns IMO.
Godzilla is more forgiving and the flow is incredible. It's all about knowing the rules, planning your strategy and hitting shots in the right order to blow up your score.
Both are fantastic games.
As far as entertainment goes, Godzilla's camp and theme integration are off the charts.