The FUD against this bill continues. I have great respect for Paul Broun, but I don't believe that his name as sponsor confers magic powers to legislation. Rep. Broun's bill is just as likely to be amended as H.R. 822 is. Neither of these bills authorize the government to create a national CC license. Neither of these create any government agency to administer anything. All it does is say that if you have a state issued CC license, then you can CC in other states that issue CC license, or do not require licenses.
It is true that H.R. 822 does reference interstate commerce, which sounds silly to me. So, on that basis, I do consider H.R. 2900 slightly better than H.R. 822. But, H.R. 2900 doesn't have a severability clause, and other pieces that would be considered normal. So, you can certainly debate the merits based on that. But, both bills accomplish the same purpose (as far as I can tell) and are equally likely do be amended or altered in the future.
To me, it just looks like Rep. Broun didn't like the interstate commerce clause being in the bill, saw the writing on the wall that a law was very likely to be passed, and decided to submit his own version 1/2 year later, once the writing was on the wall.