it is so weird to hear "the voice" coming from their new lead singer.

i agree-retire, aerosmith.

It seems unemotional and robotic---the new guy's a great singer but it's nonstop karaoke.

The dynamic frontmen of these bands aren't easily replaced. Bands claim that they don't revolve around a particular frontman, but they find someone who recreates the frontman's sound. That's like admitting they revolve around a particular frontman and are lucky to find an imitator.

Kinda like when Queen tried to replace Freddie Mercury a few years ago. Sure the dude got a great voice, but, it's Freddie freaking Mercury.