No, I wouldn't agree. "Earthshaker" is excellent, and like many people I suspect, it was my introduction to the band, but I love "Black tiger" (see my review in my journal). It's not perfect but it's a damn fine album, and I love "Forever" and "Winds of change": nice to see Y&T can handle a ballad with aplomb when the mood takes them.
Need to listen to more though: "Mean streak" was where I stopped, as my brother got married and moved out. Who's mean now?