I honestly have no idea how to approach the differences between PC and console.
In fact, with "Absolution" it is even worse, because not only you have huge differences between PCs and consoles (not to mention differences between consoles themselves), Absolution has such a buggy engine, that you can observe huge differences between load times on the same PC, which was the main reason why I even wrote load remover for "Absolution", as I was getting sick of runners losing up to 25s, cause for whatever reason the loading took longer.
And then of course you have controller limitations etc. so it's even worse. So essentially - I have no idea how to solve it in a way that makes sense. I guess technically there are enough runs on consoles nowadays, you could separate console from PC for the full-game leaderboard, but that is not the case for ILs.