Blum, like the SSM cartoon, had the potential to really hit the heights. We saw the potential there. When a lot of fans find a cartoon that lasted a mere 26 episodes to be the best adaption of Spider-Man (more than five multi million dollar movies, and several other cartoon series, too), it's easy to see the potential it had if had continued to the 65 episodes they were originally striving for. Blum could have become Spidey's Mark Hamill. So yes you are understanding me correctly. Blum did great with the handful of episodes he got, but he needed more material and more exposure to really get to Mark Hamill's heights icon and acclaim wise. Hamill got to show a lot more diversity because he got so many episodes and variety of stories. He even got to go darker than the limits of the Saturday morning cartoon would allow him, when he did the animated movies and the acclaimed Arkham games.
That goes for Kevin Conroy as Batman, too. Josh Keaton is definitely a fan favorite, but a lot of people love Chris Barnes best, too. But with Batman, it's almost unanimous that Conroy is the best Batman voice. That's because Conroy, aside from being a great voice, got to show his range with it so much.