Why can the gear builder not calculate defence EP correctly

So, for a while now, I’ve noticed that the gear builder always messes EP amounts on builds. When I calculate them manually, they’re always above the amount provided. After doing some testing, I realised that the calculation of defence EP was the culprit. If you’re not aware, three defence is equal to one EP, meaning that to get the amount of EP the defence in your build is equal to, you typically divide it by three. However, the gear builder website multiplies it by around 0.27 instead. I’m thinking there’s probably a reason for this, but I couldn’t figure it out on my own, so if anybody can provide some insight as to why that happens, it’d be very welcome.

i they updated the efficiency of defence but gear builder never updated it

Yeah, iirc the old defense formula was (Defense / 11) * 3

That makes sense, thanks !