Saying a SATA drive is not an SSD is borderline stupidity, but who's to say that it really matters.
Comparing filesystems under a certain condition is comparing filesystems.
Comparing filesystems on different conditions is NOT comparing filesystems.

I was thinking something similar to you, and that brought to mind an idea...
Microsoft should sell their OS, barebones with no utilities, at a reduced price(say $25 off)
Then they should sell a Microsoft Basic User CD with IE, WMP, WMM, Defender, Wordpad(it's a word processor!,) etc for $40
And they should sell a bundle; OS and Basic User software for the current price of the OS.

AND, they should allow resellers to sell the bare OS along with their own user bundle.
It will be great, just like Linux distributions, but with a paid-for core OS!!

A:
1) Yes, yes they do.
2) Right, but so is POS debit
3) That's why I tip cash and pay card, duh!
4) Really? The National Basketball Association? And Odwalla, Whatever TF that is.

B:
1) And why are you buying from these untrustworthy merchants with more than $50 in cash? And they might not let you chargeback.
2) But say goodbye to your next ten credit cards when they use your ID to get some.
3) It's really less work to do your accounting beforehand.
4) You and your sports angle, I don't get it.

I'm sure a bell curve that averages out my $85/mo(I think $0.23/kWh) would amount to.... 1300 watts peak continuous, typically in the 200-300 area (server, dvr, networking garbage powered constantly) and a deep-cycle-capable battery system could handle the heavy appliances.
So yeah, $10k would allow me to make a damn living off my solar panels at optimum efficiency.
But peak following a similar curve with a much longer zero period... Maybe not making a living.