Another Perfect Game In MLB

From ESPN: King Felix now has a crowning achievement.
Felix Hernandez pitched the Seattle Mariners' first perfect game and the 23rd in baseball history, overpowering the Tampa Bay Rays in a brilliant 1-0 victory on Wednesday.
The 2010 AL Cy Young Award winner long has talked of his desire to achieve pitching perfection. He finally accomplished it against the Rays, striking out the side twice and finishing with 12 strikeouts.
It was the third perfect game in baseball this season -- a first -- joining gems by Chicago's Philip Humber against the Mariners in April and San Francisco's Matt Cain against Houston in June. More than half of all perfectos -- 12 -- have come in the past 25 seasons.This also was the sixth no-hitter in the majors this season, three of them at Safeco Field. Humber threw his gem in Seattle, then six Mariners pitchers combined to hold the Los Angeles Dodgers hitless at the park on June 8. Prior to Wednesday, no team has ever had a combined no-hitter and a complete game no-hitter in the same season.For the Rays, it was an all-too-familiar feeling. This was the third time in four seasons they had a perfect game pitched against them, following efforts by Dallas Braden in 2010 and Mark Buehrle in 2009. They've been no-hit four times over the past four seasons.
http://scores.espn.go.com/mlb/recap?gameId=320815112
This has been an unbelievable season for pitchers as this is the third perfect game this season, a record and the 6th no hitter this year.
So, are the pitchers getting better or the batters getting worse?