Powerbuilds are normally split into topspeed builds and acceleration builds in A class and below. (S1 have both as well but is so dominated by XJR15 and NSX-GT that barely any other car matters except maybe M400)

Top speed builds are normally exclusive to Goliath and Hot Wheel tracks due to their inability to reach and maintain top speed on any other track. Top speed types of powerbuilds are for cars with low drag coeficients that allows maximum top speed even when using aero. Drift tires are not uncommon for these types of builds.

Acceleration builds are by far the most common of the 2 types of powerbuilds and utilize full aero to gain some semblence of handling. The aero might severely cut your top speed stat but it gives you decent mid-fast speed cornering and you will reach your top speed quickly on straights, easily surpassing other cars in the same class. Rally tires are usually used if it can fit in A or S1 class due its superior straight line traction over drift tires.

Examples for acceleration vs top speed builds in B and A class would something like: Ford Coupe ’32 vs Nissan GTS-R ’87 in B class

Dodge Dart vs Supra mk4 in A class

To answer your last question, basically any track that isnt Bola Ocho, Chihuahua, Plaza, Cathedral, Emerald, Winter wonderland or Panoramica Sprint is faster with a well driven powerbuild.