At the risk of fanning some flames here...and in hopes of extinguishing them...I want to revisit the cocking issues with the M&P.
Clearly the Glock is half-cocked. On my 1991 era 17, after triple checking that I am unloaded...I can actually see between the slide and the frame well enough to see the actuator pushing the striker back before it releases on a dry-fire. I can also detect the spring tension with my index finger as this happens. So two of my own senses plus the Glock literature tell me what I know.
With the M&P, I have not been so clear. I cannot see the thing happening, my triggers are very smooth, and during the take up, I do not feel the same sort of thing that I feel on the Glock. PLUS I got the whole internet information gap/overload in which there seems to be quite a divergence of opinion on the matter and I have not seen any facts.
So, hoping to bring facts to the conversation, is the M&P Half, Full, or nearly-Full cocked? I have heard all three stated with equal passion and certainty. Which leaves me uncertain.
Regardless, I love both mine, shoot them better than any pistol I have ever owned, and my 9c is my EDC (taking turns with a 642).