deetwocat, that is one impressive piece of steel for a table. It got me wondering what it weighed and by a steel formula the table top would weigh 1300 lb and then your legs and so forth on top of that.
Our table is 32" wide by 6 feet long so that 5/8 plate would weigh 410 lb, then the legs and angle iron stiffeners on the underside, the shelf along with tools I place on it adding a fair bit to the weight. That just shows the difference between a table like ours that works pretty good but will move or tip if too aggressive while yours becomes a rock solid structure.
So when I see someone who has set up a work bench/cabinet system along a wall and put on 1/16 thick metal they had formed to make a nice surface with a bent over edge and a vice attached, all I can picture is an upset farmer when it begins to disintegrate the first time a big hammer comes down on whatever is in the vice. Fine for small items and not beating away but would never begin to take what these steel tables can handle.