Higher cpu than gpu percentage. Is it a bottleneck?

I was running some benchmarks in gta 4 and notice that my phenom 965 @  4 ghz was running at around 75% during the benchmark but my graphics card was only at around 45-50 % does this mean the processor is bottlenecking my 7850 oc'd at 1150 or is it just the shitty port that it is?

It's a shitty port, a very shitty port. I just throw it on medium and avoid the options menu.

it's a cpu intensive game and your gpu is better than your cpu.. neither cpu/gpu are pegging 100%.

GTA IV was just a terrible port and as previously stated if the CPU isn't at 100% there's nothing to worry about.