Yup, the blade exposure comes from it being open comb. Thats the funny thing about it, a razor can be super mild but still not feel mild if it has more blade exposure.
An example of this that comes to mind is the PAA Bakelite Slant. Its actually super mild, with minimal blade gap but it feels aggressive because it has a ton of blade exposure, due to being open comb. Not to mention its a slant.