converter opinion question

At Cudafacthackjob, yes it was slower off the line. I could tell immediately. The weight difference between the two converters, one being a non lockup, the other a lockup which has a clutch inside is a significant difference in rotating mass. Now, if I were to pull that 2500 lockup, I would weigh it more out of just curiosity and see how much a higher stall lockup converter would cost and how much they weigh.