What would help forum members better understand your conclusions is what other tires you have purchased and the mileage you obtained with them. Provides a relative comparison.
I have had
Two sets of Michelin PR3s. They where just OK did nothing special. <6k Max.
One set Dunlap RSII better then the PR3 but they where just OK did nothing special. <6k Max.
One set of Michelin PR4s. Worst tire I have ever had on any bike. Front end stepped out 4 or 5 times and the rear steeped out EVERY TIME I RODE THE BIKE. GARBAGE. Could not wait to get them off the bike. 6.5K
Two sets rear three front of Pirelli Angel GTs A spec for the most part, first front was not a spec. Great grippy tire fronts only give 4k rear 5.5k