Proper maintenance will make the largest difference regardless of how many contact points your edge has.
Totally agree, but the issue is how much do you want to tune? Some of us are religious about waxing and tuning, so it is not as big of a deal. If you only wax your base and sharpen your edges once a season, like many people, having MTX and an extruded base is the perfect cocktail for care free shredding.
Yeah I'm going to say the same. As the edges get dull MTX may possibly have the advantage, I'm not sure, I've never taken the time to compare. But both edge profiles out of the box and freshly tuned I coulnd't feel a difference. Both edges, sharp, grip more than enough.
This is where I've felt the difference in MTX vs other edge tech. My C2BTX T. Rice gripped almost as hard on day 30 as day 1 w/o any sharpening. My NS Proto most certainly had less hold after 10 days than it did on day 1. It just pushed me to sharpen more frequently, but when I did, it held like a dream.
it all comes down to maintenance and it doesn't matter what your board's profile is, nope this is not my personal opinion rather a lab test,
check it out here
Snowboard Edge Test - Ice Breakers - The-House.com
also i just picked up a board Never Summer Cobra man it holds ice like it is nothing!!
That is the most bullshit test I have ever seen, and to call it a "lab" test is insulting to the science community. Different riders = different speed out of the slingshot, different bindings = varying levels of edge control, and WTF does a flat 180 or butter have to do with edge hold? If you look at the video, half of them can't even stand up and are falling all over the place.
They should have tested the same way they test climbing shoe rubber. Take a piece of the rubber, but a standarized weight on it, and place it on a given material (fake rock or whatever). Then increase the angle of the rock face and the rubber with the highest coefficient of friction can withstand the steepest angle.
Same would for for the edge tech. Make a mini version of each edge and profile... like a foot wide... and mount it to 2 parallel runners (to keep the edge at a given angle) and attach to an ice block. Add weight to the edge and increase the incline of the ice block until the edge begins to slide down the runners/ice block. Whichever edge does not slide at the steepest angle would have the greatest edge hold.
I'm willing to bet that a camber profile would win initially... but if this was a lab, the results would have to be reproducible. Perform the same test 1000 times... 5000 times... to replicate riding on an edge for a week or whatever, then you would see the edges getting a bit more dull and I think the MTX would hold better.
Something else I've been thinking about in terms of edges dulling...
On a smooth edge, pressure from the weight is being distributed over the whole edge... so a certain pressure on every given point of the edge. With MTX, you have 7 contact points, so more pressure is being put on each point (pressure from the non-contact troughs is being placed on the peaks), so as the edges begin to dull, there is more pressure pushing those points into the ice, thus better grip. If I'm not mistaken, the formula for friction on a given point is F=u*N, where u = the coefficient of friction, same for all edges made of the same metal, and N = the amount of perpendicular force (to the ice) at that point. N would be less on a camber board because the force from a given weight would be less for every point in contact with the ice. N would be greater on an MTX board, because the force from the troughs would be placed on the peaks, therefore increasing their friction... or edge hold. Every point on the board can withstand a certain amount of force pushing it down the ice, and that amount of force is reduced as the edges get more dull, but increased as the force perpendicular to the ice increases (in other words, the force pushing the edge INTO the ice). With the greater amounts of force perpendicular to the ice on the 7 MTX contact points vs. the camber deck, it increases the threshold amount of force the edge can handle before it is pushed down the ice.
Now that is some fucking hypothesizing worthy of scientific laboratory study.