This study investigates two innovative content delivery proposals of next generation Internet, namely Libswift and CCN. We present results of a measurement campaign performed on a realistic network testbed to evaluate and compare their performance in relation to reference measurements obtained by the traditional client/server approach. The results underline the expected superior performance of these new architectures for many use cases. But we were also able to identify several severe weaknesses of their particular implementations. In particular, we could observe a heavy performance degradation under certain conditions, i.e., mainly for connections characterized by high delay and high packet loss. Furthermore, we investigate adaptations to increase their performance and we evaluate a prefetching mechanism for CCNx to improve its performance under these adverse conditions.