My present conclusion is that the Volkssturm was more effect than the home guard, given that they at least had widespread access to viable anti-tank weaponry such as the Panzerfaust. Meanwhile the Home Guard while they did have access to Spigot Mortars in limited numbers seemed to have been primarily supplied with grenades/Molotov cocktails for anti-tank use.

You're also comparing a force that was prepared to repel a tank attack in 1940 to a force that needed to repel a tank attack in 1945. I think you underestimate just how far armor had come from the 1939-40 era to the late war era. Secondly, one force was repelling what would ultimately be a seaborne and airborne invasion - given the paucity of German assault and landing ships in battles of the era, such as at Crete, we can conclude that the material amount of German armor landing in the first crucial days of Unterhemen Seeloowe would be low indeed.

But then again you could argue this shows what each organisation was built for. The Volkssturm was a true defence force designed to supplement the depleted German army in combat, while the Home Guard was a morale boosting force to take rear area jobs off the conventional forces.

Essentially, yes. The Home Guard also often doubled as firefighters and spotters/observes (for enemy aircraft) during the most pressing days of the Battle of Britain and the Blitzes. Though your claim that the Home Guard were not a true defense force is just plain wrong. In fact, from military perspectives, the Home Guard were in almost every shape and form far more 'regular' in appearance and habit then their Volkssturm counterparts.

The Home Guard was also far better organized and trained than the Volkssturm by merit of simple time. The Home Guard, raised proactively during the Battle of France, often had at least something approaching uniform - and at least a matter of months to learn their craft before an invasion by sea became feasible for the Germans; if indeed it ever would at all. While you point out their paucity of rifles, they at least were using relatively modern productions of the Enfield series when they were issued; many Volkssturm soldiers, especially the younger members pressed into it from the HJ, often just had a panzerfaust. Surely no further proof of the relative cohesion of either force is needed than to point out that the Home Guard had a relatively in depth set of field manuals for defensive combat and planned out operational maps in the event of an invasion. Operational preparation is as much a material effect as weaponry is. I find it laughable that somehow the Volkssturm; made up of convalescents and WWI veterans can be considered a better force when they were raised in late 1944 and essentially tossed under Allied advances with little to no training or preparation. Quite literally the exact opposite of the Home Guard.