Clipping doesn't participate in rating calculation, if you want automark by it you need use Javascipt, see example:
/*
Author: Similarity Team
Version: 1.0
Description:
Simple auto-mark dialog analog
For speedup before launch analyze all files ("Analyze all" context menu)
*/
// unmark all files
results.audio.unmark();
// simple mark by lower bitrate
var dups = results.audio.dups;
for (var idx = 0; idx < dups.length; ++idx) {
let item1 = dups[idx].item1;
let item2 = dups[idx].item2;
// skip counter-pair (1-2 and 2-1), process pair only once
if (item1.path > item2.path) continue;
// first priority
if (item1.analysis.rating > item2.analysis.rating)
{ item2.marked = true; continue; }
if (item1.analysis.rating < item2.analysis.rating)
{ item1.marked = true; continue; }
// second priority
if (item1.analysis.clips > item2.analysis.clips)
{ item2.marked = true; continue; }
if (item1.analysis.clips < item2.analysis.clips)
{ item1.marked = true; continue; }
// 3rd priority
if (item1.analysis.maxFreq > item2.analysis.maxFreq)
{ item2.marked = true; continue; }
if (item1.analysis.maxFreq < item2.analysis.maxFreq)
{ item1.marked = true; continue; }
}