Yes, the weapon crit ratings indicate how many extra successes you need to roll beyond the first to reach a crit, whereas the general critical success requires three successes in total. The difference in description here is because in combat, extra successes can be spent on several different bonus effects - not only crits.
Hullo, Tomas,
Thanks for clarifying the difference in terms of extra successes and how they work in combat versus during general situations. I was a bit confused on this score because of how the rules were phrased in different place, but this is how I've run the game for the five or so sessions of CORIOLIS that I've played. So, all is good.
But nice to get confirmation on this.
