Rms street lynx vs. back half parallel 4 link

here what I have observed and you can do the same and draw your own conclusion....some of us already have

when I go to the Nats...the fast cars on the drag side (pits) are mostly back-halfed/ 4-links/ladder bars
the cars on the show side (my peeps)...have triagulated 4-bars (except me...I'm confused!)

just say'n