Late to this discussion, but I have nothing but respect for Blaze. In some ways, stepping in for Bruce was the hardest replacement in heavy rock/metal. Think about it. Yeah, Dio replaced Ozzy in Sabbath, but anyone who knows singing knows Ozzy isn't a great singer, even back then. Sammy Hagar replaced David Lee Roth, but again, DLR was not a good singer.
But here comes Blaze replacing Bruce Fucking Dickinson. That's a tall order. And they expected him to sing the stuff like Bruce. Really tough. At least when Ripper Owens replaced Rob Halford, Ripper had that voice that could do that justice. Blaze was just behind the 8-ball, and it was totally unfair. (Again, commenting in retrospect.)
I prefer the Blaze-era Maiden tunes with Bruce singing. But IMO, that's because they were all written with the "Maiden sound" in mind, which has Bruce all over it. But Blaze doing his own stuff, or things re-arranged for his voice? Dude can sing damn good.
A ton of respect.