Here is the the album containing profile comparisons:
http://imgur.com/a/zOMqoqL
I'm on the iPad and couldn't bring the images down from their huge size in a time effective manner, so you all get the link, sorry.
All comparisons have the Drew Gibson Luster on the left side. On the right side is a new Glow Champion Leopard3, a Star Leopard3 from I think the first run, and for good measure a shot with my trusty old PFN Pro Leopard.
The details for the three Leopard3s are as follows:
175 gram, Yellow Luster, 10/10 condition, brand new
175 gram, Glow Champion, 9/10 condition, used in field practice for a couple weeks
175 gram, Yellow Star, 9/10 condition, from the bag reserve stash
I have a relatively strong arm, and was throwing these around 250-325 feet forehand, and 300-350 feet backhand on low lines, trying to mimic the experience of dense woods golf while in the park.
Getting to the point, as far as flight goes, all three Leopard3s are more similar than they are different, by even the most critical measurements, but there are differences.
First off, the Gibson Luster was not as "overstable" as I've heard it built up to be. It would ride up just a hair on a good rip, glide straight for 75 percent of its flight, then begin a gradual forward fade with little skip. It is naturally a very straight-stable disc, with only a hint of turn when new. Compared to a regular Champion Leopard, the high speed turn happens sooner in the flight, and the fade happens later. In my experience, this seems to be a common theme with the "3" top discs.
The Star leopard3 had many of the qualities of the Luster, but would ride the straight glide longer before its modest fade. In the hand you could feel the tiny extra bit of shoulder, which I personally prefer, as it seemed to make it easier to grip.
The Glow Champion seems to be the relative outlier here. I think that the extra flat top takes away some of its high speed stability, as well as some glide at the end. It will get to the destination a bit faster, but with more wiggle before a larger, more sideways skip.
All of these differences being said, not even the most resilient HSS of the Luster, nor the extra fade of the Glow was even close to my 8/10 Glow Teebird3.
Part of me wishes I had a stock Champion to compare as well. Unfortunately, when the Leopard3 first came out, I went and bought one immediately, headed straight to the course, and the very first hole grip locked it into a headwind, watching it sail deep into a blackberry thicket. I'm lucky I ever gave the mold a second chance.