Dizzy was too thirsty. And with her personality, she would be cool being a side chick so you really don’t need to choose her over Carmen at all.
Carmen looked better, would have a better career and it wasn’t like she was leaving Rico for Xander. She just wanted to have her career and you can’t really fault her for that.
Dizzy was down and she was the homie and she didn’t look bad, but she wasn’t fukking with Carmen. She wouldn’t have made Rico choose so that makes her the perfect side chick if she would’ve lived. Rico could’ve had both an been set.