is a better/more entertaining game than PD Saga. Yup, deal with it.
I haven't played Panzer Dragoon Saga, and probably never will, legally at least, but I'm pretty sure it's not a rail shooter. That's like saying Paper Mario is a more fun and engaging game than Mario Kart - One's a rose garden, the other is shit in a basket, obviously those can't be compared. Also, genre biases.