Two comments: While the trigger pull force might be the same on the Glock and revolvers, 10 lbs or so, the length of the trigger pull is much longer on most DA revolvers than the Glock. This makes the DA revolver somewhat “safer” IMHO.
Ruger (and I think Taurus) have transfer bar safeties which prevent the revolver from firing unless the trigger is completely depressed. I believe this provides the same resistance to drops or partial trigger pulls as does the Glock.
Note: Standard trigger pull is rated at around 5.5 lbs for the stock “out of the box” Glock. (”NY Trigger”)
As to whether the shorter length of the Glock’s trigger pull is less safe than a revolver at 10 lbs; I suppose to some extent that is a subjective judgment; depending upon how well trained the shooter is. There are also trade-offs for safety vs accuracy w/the longer/heavier trigger pull ...which, I suppose, also has safety implications if one considers the possibility of collateral damage in a high stress, self defense situation.
Personally, I think it is best to rely upon good training; i.e.: keeping the tip of one’s trigger finger rested against the frame of the Glock just above the trigger guard. If my finger goes inside the trigger guard it is because I intend to shoot something.
Here's a link to a good discussion on the Glock trigger pull issue you allude to. It has some interesting data from actual measurements:
http://findarticles.com/p/articles/mi_m0BQY/is_11_50/ai_n6209982/