Depends, GTA V > SR4 but SR3 > GTA IV. (GTA IV was **** ...)

They're so different at this point it's like saying a drama is better than a comedy, you might enjoy the drama more, but that doesn't mean it's better. The two can't be compared, you can only judge whether or not the succeed in what they set out to do, if it's make you cry and they have you on the floor weeping like a bitch then they've succeeded, but if you don't like crying you won't enjoy that. It's personal preference. I will give you that the first saints row was inferior to GTA 4 but now they've really made name for themselves and set themselves apart from the original GTA knockoff that it was, now SR4 and GTA5 look like completely different games. Frankly if you're still comparing the two it just shows that you haven't playing any of the recent games otherwise you would know that they're nothing alike and that they're not fit to be compared, so I don't believe you know what you're talking about.