I have 2 trucks and 2-2s lipos and wanted to know which would best for either truck

The Trucks are...

Stampede VXL 4x4....Stock electronics Stock Gearing

Slash 2wd Raptor CC Sidewinder SCT Combo 3800kv...all stock otherwise

The Batteries are

SPC 2s 6500 MAH 50c
SPC 2s 5000 MAH 30c

Will the 50c Battery compliment the CC system more than the VXL??