Sounds like you've got an axe to grind.
Only someone out of touch with the industry would think that the first driver after launch would offer the most major boosts, it was probably still being built days/weeks before the hardware hit the market. Usually for both companies the significant driver changes are the 3rd or 4th driver releases when developer and customer feedback have given them time to optimize the drivers.
Short term the first launch is usually about getting Betas and hotfixes WHQL status.