Answer
See below
Work Step by Step
Given: $h_g=k_1H^3V^2\\h_r=k_2H^2$
When the ratio of heat generated to heat released equals 1, the height $H$ is inversely proportional to the square of the speed $V$.
The shorter runner will have the speed advantage:
$\frac{h_g}{h_r}=\frac{k_1HV^2}{k_2}=1$
