These razors are two totally different animals
I've a few so called aggressive razors in my den . . . a Sledgehammer Slant, a Red Tip, Fat Boy, and a Gem 1912. All these give me smooth comfortable shaves.
My first shave with my 1912 was a bit rough as I used blades from the hardware department and not proper shaving blades. Using the proper Gem shaving blades with this razor was a revelation. Aggressive . . . yes somewhat . . . but a close smooth comfortable shave none-the-less.
Now onto the Gem Micromatic, I'm basing this on two shaves with the beastie, this is by far the most aggressive razor I've ever used. The lather catcher is shorter than on the 1912 and not as rounded, thus making the blade seem to ride closer to the skin surface, there are also two tiny dimples on the base plate of the micromatic that appear to "gap" the blade a bit wider than the 1912. My Micromatic shaves exposed the most weepers I've had yet and my first real case of razor burn.
Will I use it again . . . You bet I will . . . but knowing what I know now, I'll take nothing for granted with this razor
I'm writing this not to dissuade anyone from trying the micromatic, as I know some people appreciate aggressivness but more to give a heads up as to what to expect from the razor. If your having a bad lather day reach for another razor.