I've run gators for 5 or 6 years on three different bikes and love them, but i do sometimes wonder if they're not what they were.
But the fact is, you can't say one is definitively better than the other. If you punctured on a Gator, who says those EXACT conditions wouldnt have punctured a M+ for instance. Luck is so much an issue that you can't really compare. I've run for a year plus without a puncture with Gators, then got two in quick succession. That's bad luck.
Then looking from the other side, ive had two that have cut up quickly. A bit dissapointing when it happens, but then you sacrifice rolling resistance with heavier tyres. Personally, i find Gators quick and i like that.
Riding in the wet ?...i've covered maybe 8 to 10,000 miles on Gators...yes they have slipped in the wet (once alarmingly)...but only 2 or 3 times in all that mileage. As Skwerl says...maybe it was a patch of diesel. It always happens on bends...the very place you could get a diesel spill.
Are Gators THE best for puncture resistance..probably not, but they are fast.
I guess anyone should ask themselves, do you want a fast, light, reasonably well protected tyre...if so buy Gators.
Or do you want (alledgedly) better puncture protection, but sacrifice speed and weight...then buy a different brand.
Personally, i like gators, and will stick with them.