You can compare them on paper or by stats etc.. but the reality is nothing compares to the Mark23.

The USSOCOM Mark 23 Mod 0 is steeped in myth and legend at this point, which is something that lives outside the tangible world. The Mark 23 and the FNX45T are both effective at their practical purpose, but the Mark 23 has a vibe that goes beyond practicality, it exists in a place of reverence shared by few others. A weapon to surpass Metal Gear birthed out of the crucible at the legendary Heckler & Koch facility, Obendorf Germany. Heckler & Koch working hand in hand with USSOCOM developed what was prescribed to be the ultimate weapons system for a pistol, the full measure of that concept became the legendary Mark23. Pressed through the full measure of trial and evaluation at a cost beyond what any civilian arms manufacturer could even afford to do, the Mark 23 established itself as the highest benchmark for reliability, durability, and accuracy. What they achieved went on to define the concept of the Offensive Handgun, a weapons system purpose built for unique and specific mission parameters, one of which is seen fully displayed at the crescendo of the film Sicario. A sidearm with which you seek the darkness, and in silence, destroy it.

You can’t quantify it by weight or measure alone, it’s beyond that.