Why do people feel the need to compare SD2K and MF? They are on opposite ends of the globe, and their design is totally different. SD2K is a massive Out-&-Back, MF is a huge freeform speed coaster. It's like comparing apples to BBQ ribs.
Oh, and to answer your question, it "stacks up" a little bit taller than MF. ;)
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"X" marks the spot in 2001!