I'm not in the market for either one, at least not today, but I can share what I've learned from a few years shooting full size (4.5-5" barrels) versus compact (4"barrel) pistols. With a red dot, the accuracy differences are very small, even out to 200 yards. Now with irons, it's different because of the sight spacing, I suppose, but I've never compared them with irons alone.
So the choice comes down to balance/look/feel, not accuracy, and maybe what accessories are available. For myself, I just like handling the 4" compact pistols a little more than the full size "not too big, not too small, just right".
Even the 3.5" subcompact P-10S doesn't give up hardly anything in accuracy with a red dot mounted. Another pleasant surprise.
Joe L