What do you mean by "elsewhere"? Is their testing setup ducumented? Operating System (and service pack/updates), PassMark version? Fresh install? Tested after shutdown + reboot?
You should copy their setup as much as possible to get similar results, don't just judge on your APU like: i don't get this score -> APU broken. Fluctuation in benchmarks is common, try to test with clean OS.
Edit: it's possible to get huge varations depending on OS (even x84 vs x64) and eventually OS updates, and certainly bloatware. Fluctuation between 4600 and 4300 is worthless, go for 10 runs minimum (or more if there is obvious aberration that need to be discarded later on) and calculate the mean score:
First run: power on, benchmark, write numbers down, shut down.
Second run: power on, benchmark, write numbers down, shut down.
Edit 2: Helpful software (never tested myself): http://www.passmark.com/products/rebooter.htmEdited by IrvineG - 5/24/16 at 9:43am