Yeah in qualifying (closest parallel to superlap) they run in the 29s. And this car has every right to be faster with the extra mods allowed. Most importantly of all they should have access to years of data about the track, compared to most other competitors who have only had a few practice days there, or none at all.
Would be great to see local engineering stick it up the whole world
My guess is that soft semis in the same width will not be any slower than dunlops control slick. Dunlop have no reason to make anything but a super safe, durable tyre when it is a control tyre.