There are differences in the materials used between the Factory Team and the RS versions of the B4. For starters, the shocks on the FT kit are hard anodized and Teflon coated for smoother movement and longer wear. The RS shocks are simply blue anodized and do not have the long wear of the FT shocks. The plastics between the two kits are different. The FT kit uses a graphite reinforced plastic which is stiffer and lighter than the standard plastics in the RS.
The nice thing is, you can slowly upgrade the RS to FT spec over time as your budget allows.
How would I describe my holeshots?
Ready... Steady... Confetti!!!! (gonna need a new one of those)