In fact, if you read that article more carefully, you'll find you're not reading the relevant part of that article.
The Kola Superdeep Borehole set two records: deepest point reached, and longest borehole. The latter record was, as you say, surpassed twice by oil operations. But if you look at the context of the comment I was replying to, it's clear that Dr Stalker was talking about deepest point reached (surely no one thinks Cameron could dig a multiple-kilometer hole from his submarine). And so it is the deepest-point-reached record that is relevant, which was not surpassed by oil operations. This is because those oil boreholes are diagonal, with a large horizontal component.
Also, based on the information I could find, I don't actually know how deep the KSB is, relative to sea level, because I don't know what altitude its "ground level" is, and all the depth measurements I could find are relative to ground level.
The Kola Superdeep Borehole set two records: deepest point reached, and longest borehole. The latter record was, as you say, surpassed twice by oil operations. But if you look at the context of the comment I was replying to, it's clear that Dr Stalker was talking about deepest point reached (surely no one thinks Cameron could dig a multiple-kilometer hole from his submarine). And so it is the deepest-point-reached record that is relevant, which was not surpassed by oil operations. This is because those oil boreholes are diagonal, with a large horizontal component.
Also, based on the information I could find, I don't actually know how deep the KSB is, relative to sea level, because I don't know what altitude its "ground level" is, and all the depth measurements I could find are relative to ground level.