Bloggs:
I assume when you talk about " weather " you refer to cloud base, not RVR
‘Visual approach’ means an approach when either part or all of an instrument approach procedure is not completed and the approach is executed with visual reference to the terrain.
8.1.3.1.6. Visual Approach Operations (AMC9 CAT.OP.MPA.110)
Minimum RVR / visibility for a visual approach is 800 m.
Minimum RVR for a CTL specified by chart or operator, usually not less than 3000m
Circling - MDH and Minimum Visibility vs. Aeroplane Category Table Visual Approach Operations (AMC9 CAT.OP.MPA.110)
Circle to Land
Aeroplane category
MDH / Visibility (ft - m)
Category C
600 - 3000
I fail to see how Visual is "better" than CTL?
Now, if we are saying that the instrument approach is carried out to MDA, say 600' then circling commences with the required RVR, but, on the final approach vis is lost and a missed approach executed I can understand the question and the answers are as prescribed.