I'll take that challenge. 16 is 300% more than 4, not 400% more. 12 is 200% more than 4. 8 is 100% more than 4. 4 is 0% more than 4.
If you stick with the ridiculous idea that 16, which is 400% as much as 4, should be called 400% more than 4, then 4 is 100% "more than" 4. And 4 is not more than 4.
For some reason, "more than" is being used instead of "as much as" in common writing, introduced by dishonest advertising. However, it's not like other changes in the language which can happen over time, because it is wrong and leads to ridiculous contradictions as above.
Got it? Or did you miss the error in the original post that I was referring to: "The EJ340 utilizes industry standard mini-SAS connectors, a Centronics compliant form factor and allows the company’s RocketRAID series HBAs to support up to 16 SATA hard drives through a single connector and offer 400% more storage capacity and scalable performance."