I have raced both at stae series races here in Florida and almost every time the el;ectric 4wd cars are faster, sometimes by alot. On the rougher tracks it is closer, with the faster car still usually the 4wd electric.
In fact at our last state series race JR Mitch would have qualified 3rd in 1/8th scale with his "2wd" electric buggy(he also TQ and won 1/8th scale).......Jim