You said macro, and speaking of macro, ratios like 1:1 are exactly the SAME size and SAME reproduction ratio on any size sensor. 1:1 is 1 to 1. 1:1 specifies the ratio, the object is same real life size in the sensor image, on both sensors if both are at 1:1 (a U.S. Penny coin will be 3/4 inch diameter on both sensors). The lens set to 1:1 does 1:1 regardless of whatever camera body is attached. The larger sensor will simply show a larger view around it (not cropped by sensor).
Speaking of a normal photo scene (not macro), then if with the same lens from the same location spot and distance (one way to compare them), again, the same lens does the same thing. The larger sensor does see a larger wider view (a larger frame), but within that frame view, the objects are the same size (same lens at same spot). Because the same lens does the same thing. The ratio of the frames is larger, but the ratio of the scene objects are exactly the same (with the same lens and distance).
But in the normal world, if trying to get the "same picture" to compare, we use a longer lens on a larger sensor from same spot, or stand back farther with the smaller sensor and same lens, to get a similar view (to compare the entire frame). Both focal length or distance are a multiple of the crop factor. That's so they both show the same field of view, the same picture. Then in THAT case, the larger sensor showing same scene would show smaller objects in a larger frame (of same scene). In THAT case, the larger sensor would see a smaller reproduction ratio. A large factor is that the lenses and/or distances are not the same then, which may be chosen due to the sensor size, but the difference is not caused by the sensor.