At the risk of sounding like a broken record, I will once again point out that without "Christianity" there would be no Jesus Christ. Shane Hipps makes a feeble attempt at the opposite claim in his HuffPo piece, "Why Christ Doesn't Need Christianity." Like so many before him he simply ignores the most relevant details. That there are no accounts of Christ* outside of scripture should bother anyone interested in legitimate historical research.
I found the third paragraph particularly amusing. It is a single sentence but serves as an excellent example of his mindset.
"Just because Christianity claims Jesus as its own does not mean that Christ automatically claims Christianity as his own."
Setting aside that the likelihood that Christ ever really existed is near zero, it is an odd comment considering the consensus among Biblical scholars is that the earliest pieces in the New Testament are at least one generation removed from the time Christ was supposed to have lived. Having been dead for a handful of decades it would be rather difficult for Jesus to claim anything about Christianity whether he wanted to or not.
Which brings me back to the main point. Whether real or mythical, the odds that anyone would know anything about Jesus Christ had the Christian religion not formed is very low. Christ does need Christianity. On the other hand I can see Christianity outliving the notion that Christ was real. Daoism (or Taoism, if you prefer that spelling) is still around despite scholars coming to the consensus that its founding figure, Lao Tzu, never actually existed.
*There are accounts of Christians but that is hardly the same thing.