'93 Noo Yawk attitude heel Joey Styles is THE, hands down, worst play-by-play man in wrestling history. Ever. Even if you throw in color guys I actually enjoyed him far less than Rob Bartlett when I was watching the '93 Yearbook, and Bartlett SUUUUCKED.
More straight-ahead '94-'97 Joey is better, but still has flaws. I don't think he really "put himself over at the expense of the wrestlers" as Mauro quite rightfully has been accused of. My big issues with him are a.) being the announcer equivalent of a "spot monkey," who thinks that just reciting move names is play-by-play, particularly when he generally didn't have a color analyst with him, and b.) he telegraphed EVERYTHING, it seems like. If Joey declared that the Dudleyz were going to retain the tag titles or that Luna was going to tear apart Beulah or that Cactus Jack was coming in to help Tommy Dreamer, you could guarantee with your life that the exact opposite would happen. I can't tell you how many dramatic moments Joey killed for me (Masato Tanaka kicking out of the 3-D comes to mind immediately) because of that shit. Lots of announcers have done the "IT'S OVER! A NEW CHAMPION TO BE CROWNED!" act before a dramatic kickout, but Joey took it to a new level.
I honestly didn't notice any precipitous decline in Joey as ECW fell apart. The product got a lot worse, but for all of his faults Joey never struck me as someone who was ever phoning it in. But that's also without having gone into 2000-early 2001.