We all have different ideas of what is "great grip". It might be good enough for you, but for someone else (like me), a 70,000 mile touring tire is not going to cut it. That is why I said HE needed to figure out what HIS priorities were. If you bought a version of your tire that was produced with a softer compound, it would grip even better, but would wear faster. If it was produced with a harder compound, it would wear longer, but not grip the road as well. The one you bought might be the PERFECT balance between the two for -you-, but personally, I gladly give up longer tire life to get better grip. But, everyone has different priorities.
For my chase Xterra, I need excellent rain capability, but high speed dry is also very important to me.
On my Dodge Viper, dry weather ultimate grip is the ONLY priority for me. On the street, I run Michelin Pilot Sport Cup tires, $583 each for the rears, $400 each for the fronts. They last less than 5,000 miles in street driving, but give the ultimate in dry weather grip. Soft compound gives ultimate grip, but bad tire wear. Oh, and they are total crap in the rain. But, I love them on that car.