I have checked but it's impossible to tell from that, since you don't know what the API calls are doing. If somebody wants to dig into the source, that's great. However the other evidence I mentioned is enough to be quite certain of this claim, for example, that their tests do not show any difference between SSD and HDD, and that their disks would have 3 terabytes per second throughput. I know around here is it more appreciated if you state things with much hubris, even if you are only 50% sure. I worded things with a little bit of caution, even if it's 95% certain.
Why not check it yourself? http://symas.com/mdb/microbench/db_bench_mdb.cc
Other tests source code published too, right there.