Lol, you have got to be kidding me! They are both about identical in the lower registers with any of these small boxes, its simply Hoffman's (previously) iron law, not it seems to be made with ti, as it flexes a bit. Still, you will not have any noticeable difference between drivers down low with these box sizes, the JL does have to work a lot harder than the Maelstrom to get there though. In the upper octaves though, the Maelstrom needs half the power of the JL to get the same performance, this accounts for an awful lot in my book, this means a whole lot less heat is being dumped into the driver, less compression, less distortion, more output, better sound quality. I am generalizing, but that is what those things amount to in a nutshell. Either driver would benefit from a 4 cube box though, the JL is at a Q of .7 and the Maelstrom is at .85, even though thats higher than I'd like, it still is doing VERY well and will make most anyone happy.
I don't see the big debate here though, the Maelstrom has far more displacement, the same power handling, much lower inductance, ect ect ect, from the looks of things without either driver being tested, I'd put my money on the Maelstrom any day.