I have the mft3 and after last night know that I'm still figuring it out. [unsure]
I do find that for a lot of repetitive cuts, I go to the table saw with a cross cut sled or stop block on the miter gauge. With the mft, you have to make the cut, and I take the saw off of the track before lifting (I probably need to learn to not to do that), then move the cut piece, put the next piece in, put the track down, make sure the track lines up in the notch, start the saw and cut. On the table saw, it is just cut, pull the sled back, move the cut piece, put the next piece on and cut. I find the table saw quicker for that situation, but I don't run into that very often.
I also find the table saw more stable, but this could be me. Last night, I got everything square on the mft3, made some cuts, checked them for squareness, then later made more cuts. The later cuts were off a little, and when I checked the mft3, things had moved a bit. And, yes, I had tightened the clamps down pretty good. I moved the protractor clamp even closer to the rail and I'll see if that makes it more stable. I like the mft/track saw. The dust collection is great, and I do think that it is safer, but it has taken some getting used to for me.