IIRC, that bar (with a Sigma stem) was only faster than the Ventus Mk1 if you didn't fit brake levers to the TriRig. Based on that, I'd be surprised if anybody could measure a difference between your bar and a Ventus 2 if both bars had the same levers/risers/extensions.
Actually I think I remember looking at those graphs. I've had the bars for years so forget most details now. I'm sure there's most cost effective ways of removing 2 grams of drag from the system. (no, shedding 20kg before next Aug will not happen)
IIRC, that bar (with a Sigma stem) was only faster than the Ventus Mk1 if you didn't fit brake levers to the TriRig. Based on that, I'd be surprised if anybody could measure a difference between your bar and a Ventus 2 if both bars had the same levers/risers/extensions.