Is battle vest better than opening rounds?

I've been doing autism DPS tests with all the various DPS buffing items in the game. I've completed the tier 2 items and on paper, Opening rounds gives the highest DPS bump.
But here's the catch, I then calculated your DPS when the enemy is above 50% vs the DPS of when the enemy is below 50% then averaged them together. It turns out your total DPS would actually be equal to that of the stats provided by battle vest.
You have the exact same time to kill vs a 1k health target as battle vest straight up.

I've had my suspicions about this item being good but this definitely helps the case. That being said, there's still a lot of chaotic variables to factor in. You drop their health to 50% faster which allows them to be more quickly killed by teammates. If your M1 character has any damaging abilities (i.e. wraith cards, infernus napalm, holliday barrel) you can use these AFTER their health gets below 50 to kill them faster and mitigate the DPS loss of opening rounds. There is also obviously the fear factor of you being able to drop their health faster than they can drop theirs, making the opponent potentially start running away. Very interesting stuff imo