A frame is geometry, period. Different geometry makes a bike handle different. A $10k bike and a $1500 bike with exactly the same geometry will handle exactly the same. People say different materials make the ride "feel" different but I don't buy that. I can't tell any difference between a stee frame and an aluminum frame (which is supposed to be very stiff). The biggest factor in bike "feel" are the tires, wide v skinny tires and tire pressure, soft v very hard.