A recent comment I read made me wonder if the WR2 head could be better understood,
not in terms of numeric gaps, but by the hours of BBS results they provide.
I know this could end up providing inconsistent results since:
1. different people have different rates of beard re-growth
2. no one person has each and every head in this range, both in SS and Ti.
3. even if they may have tried each and every head at some point, they may not have recorded their findings
However here is my assessment of the 1.55 WR2 in Ti.
It has been 19 hours since I used it to get an absolutely pristine and super smooth BBS.
Passing my hands over my face WTG, there seems almost nothing to shave.
When rubbing my hands ATG and XTG over areas like upper lip, neck, cheek and jaw
barely reveals just the beginnings of a little stubble. In another 8-10 hours, there may be
some growth but it would be an easy job for even a modest gap of 0.95 or 1.05.