The effective top tube measurement alone can be deceptive when comparing two different frames. For example, a factor to consider is the seat tube angle of each—if two frames have identical effective top tube measurements but one has a steeper seat tube angle, that frame will effectively have more reach (assuming that the saddle will need to be set back more on that frame to get the saddle in the same place on both frames). There are bike CAD programs that are useful to do more precise comparisons, but I would check with your Moots dealer. They won't let you order the wrong size bike.
If you know your contact points (saddle hight, saddle setback, reach and drop to bars, etc.) and are comfortable on the bike, you and your Moots dealer can determine which size is best for you. If you aren't 100% comfortable with your current fit, I would get professional advice before springing for a new frame. I've bought a lot of bikes over the years that I now know didn't (and will never) fit me.