Dude. You're incredibly dense. Right now, it doesn't matter how good SC theory is. Bitcoin is still better in virtually every way because you can BUY STUFF WITH IT.
Ever think of something else? Bitcoin has had 2 years, and so far, it still has a very small economy. The very few who were willing to risk setting up businesses and such have put time and money on the line based upon the expectation that Bitcoin would/will be a success. Guess what happens if Bitcoin collapses? Do you really think they'll be like, "Oh! Wait a minute! I mean, I know I lost huge on the whole Bitcoin thing, but this SolidCoin thing is great! I mean, it's been around for like...weeks! This seems like a really really good idea! I'm gonna do a new business!"
In 2 years, Bitcoin has garnished the attention of the people that would really care about digital currency-related businesses. If they give up because Bitcoin fails (and they will give up on digital currencies if they lose big), good luck trying to find a new breed of digital currency entrepreneurs to take on SolidCoin let alone one of the dozens of other cryptocurrencies that will likely spring up between now and then. I think if you really want SolidCoin to succeed, you should really act more kindly with your potential future investors.
For such a smart guy like yourself, you seem to do a poor job at parching the situation. And really...work on your communication. A little antagonizing and we've seen bits of your true nature emerge. Don't blame you though. It's a natural response given the situation.
What you are missing is it won't really make much of a difference in the long run, many merchant payment services will likely adjust to take other currencies and likely provide the capabilities to auto exchange between them for payout to the merchant with little to no effort on their part, you see with cryptocurrency this is a real possibility and even easier than with fiat currency. These currencies can coexist easily and this kind of behavior is not unheard of in human history i.e. gold, silver and copper as well as stocks, bonds, mutual funds, forex, and commodities for investment purposes. There is plenty of room for fiat currency displacement in the world that several types of cryptocurrencies can and will survive so long as they bring improvements and innovation, not sure why solidcoin is getting such animosity, it has brought and will continue to bring improvements that may also benefit bitcoin, and if nothing else we will get more empirical data about how these fledgling systems operate and how to make them even better.
What you are missing is that there needs to be a short run before a long run. And even if you take the current BTC economy and add all these other little currencies as mediums of exchange, all that does is inhibit the growth of any single one and cryptocurrencies will remain underground forever. This will limit overall economic growth and the true and potential advantages of using crypotcurrencies will never be fully realized.
And, you will get empirical data that you can't generalize to the population at large. It will be applicable to the nerd crew only.