1) 10 or 100 gigabits is not a measure of speed.
2) the "current" internet could very well exhibit the same capabilities if it didn't have to carry all the porn streaming left and right for millions of clients. A conventional network connection rated at xxx could run at that rate if you didn't have any sort of congestion, something this new network will likely not suffer because it doesn't have porn (yet). Any dedicated link will give you that. Heck, any 100Gb/s optical channel will give you 100Gb/s to play with.
3) "designed with hardware security features to protect it from the attacks" from the "internet" - by not having a direct connection to the internet in the first place? Fancy words, but it'll do.
4) $5 million to weave a cluster of fibers? Sounds too cheap.
Finally, the article says that "the new network will also serve as a model for future computer networks", but doesn't say anything about protocols, routing, etc. Nothing.