Darthphere (who may still love it when I type his name in bold) has a point about a fresh "voice" after some 100+ Newsarama interviews will sound different and in some ways better because of the variation.
That said, while I am sure Joe Q isn't a bad guy, 90% of the time he comes across with all the charmisa of a sleezy used car dealer. He's a shill, he keeps trying to sell you something even after you agree to buy, and always assumes his customers are ignorant, idiotic, and gullible. Maybe he does off better in person, maybe he just isn't a natural with communication, but Joe doesn't usually come off as amusing or bluntly honest as Wacker did. Joe would NEVER joke about the fan theory of using a Skrull to end the Parker marriage, because that's his life's ambition. I seriously believe if Joe Q had to choose between WORLD PEACE or SAFE ENDING OF THE PARKER MARRIAGE from some genie he let out of a bottle (bad pun), he would choose the latter.
Wacker naturally spent a lot of his time dispelling fears about the new "3x a month" run of AMAZING, which seems to be Marvel's closest stab at imitating DC's weekly comics, which are about the only thing that makes any kind of dent in the Top 10 sales for them. Wacker answers honestly when he can and even takes some good hearted humor about it, such as describing what his job is like and joking about using CW tie-in's in a clutch. Joe Q is too busy shilling to bother to create rapport with the audience, or at least that is what he sounds like in text. Wacker managed that subtle and subjective balence between sarcastic humor and being smarmy. Joe Q, and Bendis, don't. They're as smarmy as Jared the SUBWAY commerical guy.
Wacker manages to lay in some information and sells while taking some humor at Marvel's expense to lay out the package; the fact he came from DC originally is likely why.
Give him a few more weeks, though, and I'll probably be picking him apart like I do with Joe.