I agree with you, Latias is not only better but also appealing. The first legendary pokemon I caught without a master ball was Palkia, and that was also the first legendary pokemon I've ever caught. (I used a net ball) You see, I havent ever played Pokemon until I was 10. That was the first Pokemon game I got and It's my favorite.Which do you prefer, or think is better?
I like Latios better, for the pure fact that he was the first legendary I caught without a Master Ball.
But I'm sure there are better reasons to like either of them.