Frankly, I have always been more of a fan of the OES tour than LOG/Alchemy. Back in 1983, DS was still something of a retro-rock band. Mark's guitar sound was mostly pretty thin for rock guitar. Later, after the BIA tour and around the time of 1988, the Mandela gig and the Clapton tour, Mark moved into the Pensas and a fatter overdriven sound.
The live intro to Heavy Fuel on OTN seems inconceivable in 1983 - by 1992, Mark had reached full guitar hero status, stadium rock mode. (He probably picked up the habit of introducing songs with some improvised loud noodling from Clapton on the tour with him (like on Crossroads in 1988).)
As much as I like the Sultans version from Alchemy, overall that record does simply not feature my favourite type of sound overall. Industrial Disease, Expresso Love... They sound a bit thin for rock songs, whereas the OES tour sound on CE, When it Comes to You, ITILYTM, Solid Rock, etc., is great - fatter, with more bite. Phil Palmer probably played a part in this, and was mixed louder than Hal Lindes (at least on recordings, Hal is often barely audible).
But of course Alchemy is more famous album - it was the first, after all, and the first "live" encounter with DS on record. And it had THE Sultans version.