both swan bow and m spike bow has same base damage.
swan bow
+22% cc from great bear hide, 172 bow dmg, and 11 dex from snowfleur skin OR
+36% chd from lurker scales, 172 bow dmg and 11 dex from snowfleur (assuming favor dex without any fade touch) compare to
mspike bow
11% cc from great bear hide, 172 bow dmg and 14 dex from snowfleur skin OR
+39% chd from dragon webbing, 172 bow dmg and 14 dex from snowfleur.
difference = 39% -36% = 3%. dex 14 - 11 = 3 dex
winner = m spike bow because 3% chd and 3 dex MORE than swan bow.
if go for pure chd and dex, it's obvious that masterwork spike bow IS BETTER than swan. if you don't believe, go craft and see for yourself.
reason being, dragon leather gives 2 attributes whereas mspike uses cloth. 2 x lurker (36%) is still inferior to 1 x dragon webbing (39%)
secondly, 100% CC guarentees 100% crit hit as per current game mechanics (until it is patch. otherwise, it stands true as it is)
what this means is you want to get to 100% CC and not 101% because any excess is wasted.
100% CC with 10% chd will always outperform 10% CC with 100% chd because any CC less than 100% is dependant on RNG and that means you dmg output will always be inconsistent.
edit: my input is only valid for ARCHER and not MELEE rogue.
edit 2: I have sera, varric and myself all at 100% CC with vary CHD. all hits are critical.
reason being I am an arty. I value CC more than CHD > anyday <. everytime a CC procs, my CD refreshes.
with all 3 of us CC every hit, you can only imagine how fast my skill refreshes.