Hollowtech is not like Octalink at all - or ISIS for that matter. Octalink has an 8-veined axle-bolt that meshes with another 8-veined center-hole in the cranks. They will be sold as 'Octalink' so people know what kind of BB they are for use with. Octalink's mechanism is a metal pipe that runs through the BB-shell that is a sealed mechanism.

The Hollowtech design has 2 sealed-bearings that rotate outside the BB-shell, and a hollow tube that fits through the BB-shell. The cranks are 2-peice cranks that have the axle already attached. This makes Hollowtech lighter in weight, easy to install, and very stiff.

So each design must be used with components that are made for the specific design. Each one is different and can't be used with a dissimilar component. Regards being superior - that war rages on and I won't enlist. I have all 3 designs on various machines.