Reason why your UserBenchmark score is so low is because compared to the best hardware currently available, your PC is weak, hence the low score.
Also, i don't think UserBenchmark is "full of it" by giving the results based on face value. I'll take my Skylake build as an example here, full specs with pics in my sig.
My 1st run at UserBenchmark gave me these results:
UserBenchmarks: Game 72%, Desk 80%, Work 49%
CPU: Intel Core i5-6600K - 93.2%
GPU: Nvidia GTX 1060-3GB - 72.4%
SSD: Kingston HyperX 3K 240GB - 78.5%
HDD: WD Blue 500GB (2010) - 37.6%
HDD: WD Blue 1TB (2012) - 62%
USB: Kingston DataTraveler 2.0 8GB - 4.3%
RAM: Kingston HyperX DDR4 3000 C15 2x4GB - 101.6%
MBD: MSI Z170A GAMING M5 (MS-7977)
Not bad, eh?
Over the time, i've upgraded my Skylake build and also ran additional runs.
2nd run was done once i upgraded my RAM to 16GB and replaced aging 500GB HDD with 1TB HDD:
UserBenchmarks: Game 72%, Desk 82%, Work 55%
CPU: Intel Core i5-6600K - 90.7%
GPU: Nvidia GTX 1060-3GB - 71.7%
SSD: Kingston HyperX 3K 240GB - 74.6%
HDD: WD Blue 1TB (2012) - 97.8%
HDD: WD Blue 1TB (2012) - 63.4%
RAM: Kingston HyperX DDR4 3000 C15 4x4GB - 105.2%
MBD: MSI Z170A GAMING M5 (MS-7977)
With RAM upgrade, i gained 2% on Desk stat and 5% on Workstation stat. Game stat didn't increase since the formula used to calculate overall stats doesn't consider RAM and HDD capacity as important contributors.
3rd run was done when i replaced my OS drive: 2.5" SATA SSD with M.2 NVMe SSD:
UserBenchmarks: Game 79%, Desk 129%, Work 76%
CPU: Intel Core i5-6600K - 92.7%
GPU: Nvidia GTX 1060-3GB - 71.3%
SSD: Samsung 960 Evo NVMe PCIe M.2 500GB - 291.3%
HDD: WD Blue 1TB (2012) - 89.5%
HDD: WD Blue 1TB (2012) - 67.1%
RAM: Kingston HyperX DDR4 3000 C15 4x4GB - 106%
MBD: MSI Z170A GAMING M5 (MS-7977)
Due to the incredibly fast read/write speeds of M.2 NVMe SSD, i gained 7% in Game stat, 21% in Workstation stat and whopping 47% in Desk stat.
4th run was made after i replaced one of my aging 1TB HDDs with 1TB SSD:
UserBenchmarks: Game 80%, Desk 131%, Work 77%
CPU: Intel Core i5-6600K - 93.2%
GPU: Nvidia GTX 1060-3GB - 71.7%
SSD: Samsung 960 Evo NVMe PCIe M.2 500GB - 297.4%
SSD: Crucial MX500 1TB - 78.8%
HDD: WD Blue 1TB (2012) - 92.4%
RAM: Kingston HyperX DDR4 3000 C15 4x4GB - 106.2%
MBD: MSI Z170A GAMING M5 (MS-7977)
Changing storage drive to a faster one gave me additional 1% in Game, 1% in Workstation and 2% in Desk stat.
When looking the bench scores throughout my upgrade progress, i can't say that UserBenchmark is "full of it". Also, if i were to upgrade my GPU to a e.g GTX 1070 Ti, i'd gain few % in Desk and Workstation stat and about 35% in Game stat. Though, for time being, i don't plan to upgrade my GPU and i'm happy with my PC.
Here's further reading on how the UserBenchmark score is calculated,
link:
http://www.userbenchmark.com/Faq/What-are-the-UBM-performance-classifications/93
If my plain text scores aren't sufficient proof, here are links to each of my runs as well:
1st run:
http://www.userbenchmark.com/UserRun/3416648
2nd run:
http://www.userbenchmark.com/UserRun/3760877
3rd run:
http://www.userbenchmark.com/UserRun/7828840
4th run:
http://www.userbenchmark.com/UserRun/8749818