hello all,
so i'm looking at getting a cross bike in the near future...probably a major jake.

I was looking at the geometries of the Jake the snake and the Major jake and noticed that the seat tube and head tube angles were different.

Major jake=73.3 Head
73.8 seat
JTS=71.8 Head
72.3 seat

I was just curious what effect the difference in angles has on the handling of the bike. I assume that the geometry of the major jake is more aggressive for racing. But i was wondering what makes these angles more aggressive?