I had the same experience testing the Torker, TM-6, and M1. The ET's and MPH were all so close, you couldn't say which worked better.
Chrysler Power Magazine did a similar test about 20 years ago when they were running a B engine in their Dart. They tested a Weiand single plane also, but it was slower than the Edelbrocks. The TM-6 was the fastest in their application. The kicker though was the TM-6 they used was modified at the plenum. The corners were rounded to blend the upper plenum into the runners.
A couple years ago I took my stock TM-6 and ported the plenum into the runners at the top only. I use a 1" spacer, and with that small amount work the car was over a tenth faster in the 1/4.
I'm sure the Torker would respond the same way with about 2 hours of work. I also think if you modify it before trying it, the car will go faster than with the Performer RPM.