Are you using the largest cassette cogset for your drivetrain? The only way to make a real difference in your gears is to go from a 27t cog to a 32t. Then however, you need a new rear derailleur too. Yeah, a few gear inches is going to cost you $$. You may be better off losing a pound of weight, it's free
Had a set of Horus rings, also 7075 T6, and I can testify without a doubt that I wore out the big ring in half the time it takes to wear out a standard issue Campy ring, and I didn't all of a sudden ride twice as much as usual. Same thing happened to my Shimano equipped friends that tried TA rings. Not an aluminum expert, but I'm guessing the T6 hardening process isn't the same across the board.