Eth4ck1e's page

With only one of the two scores the total implant value would obviously surpass the score you don't have however it states you would benefit from the cyber tech. So I assume everything stated above that is meant to mean either/or, whichever is higher.

I know it's confusing, however, it does clear up some of it if you keep reading. It states that if a creature has none of either con or int it cannot receive the benefits of an implant but if it only has one it can. With that sentence I am interpreting their intention to be int and con to set the max for your implants whichever is higher.