EXCLUSIVE/MyFOX National — Under oath and sometimes blistering questioning, Roger Clemens stuck to his story Wednesday that he has never used performance enhancing drugs. But his chief accuser and former personal trainer, Brian McNamee, says he did.

Congress settled for a draw in the he-said, he-said between the two men over whether the seven-time Cy Young Award winner used steriods and human growth hormone.

But let's see who America believed.

Click here to view exclusive video measuring viewer response to Clemens/McNamee testimony.

Research group Media Curves.com, a service of HCD Research Inc., tested two panels of subjects immediately after the testimony and asked them who was more believable after watching these clips — Clemens or McNamee. You can see the respondents' reactions represented in the visual "curves" on the video clips.