Kakizaki and Max are presented as equals, essentially.
Kakizaki has slightly more flight time, but it's not a significant amount.
The 2 are really an entire sub-story of their own. Complete with moral!
They're supposed to be pretty much identical skill levels. But Kakizaki gets overconfident and rushes into situations unprepared, while Max stays humble and assumes there's someone better than him.
Kakizaki gets shot down. A lot. Max kicks some serious mecha butt.
Ironically, Kakizaki seemed to be shaping into a decent pilot when he died, through no fault of his own.