Yeah I've noticed this happening too; particularly the London based and bigger comps. I appreciate the challenges the organisers face - I imagine the desire will be that all the grouped categories are roughly equally sized and having bigger categories in the region of 20-25 entries keeps competition healthy. However, I can understand the frustration of scoring 40+ and not getting some recognition for it. I'm sure i read on FB the other day that someone had scored 45 and got a rosette. I appreciate that's probably an outlier though.
Yes, the other organiser scored 45 and missed out on a rosette on the stout table (same as where I scored 40).