| Luca Bancone |
In my groups experience, a +1 to a save, attack roll, or anything else could easily make the difference between success and failure. And that was in standard PF, where gaining a +3 bonus was an easy achievement.
It may be anecdotal, but I personally think that it's a matter of perception as well. The bonuses don't look big, but they do a lot more because of the tighter tiers of success and failure (Crit Success, Success, Failure, Crit Fail).
A +1 can make a difference in many cases, but the point is that two character line, a savage warrion untrained in arcana and a wizard with a legendary skill have just 25% of difference in chance of success. For beyng a LEGENDARY proficient in something I think is not enought compared to some that is not even trained.