Not sure if it has been commented on but there has been a lot of talk since qualifying and also post race about Ferrari apparently throwing away pole, i.e. that they had the potential for pole. Nobody truly knows, but I don't think Ferrari were as competitive at Singapore as many expected, or as many still seem to be suggesting.
To give background Ferrari were dominant at Singapore in 2015 and 2017 and seemingly had a car perfectly set up for the circuit and others such as Monaco and Hungary. At Monaco in 2018 Hamilton could of had Vettel in qualifying if he'd of not had a poor sector 3 on his final run and Vettel was clearly beaten by Ric. Going into this season Ferrari seem to have gone more towards Merc's philosophy of having a car that works on a wider spread of circuits, and therefore naturally losing some of their edge at slow speed circuits. They were beaten at Hungary and although they had the fastest car, practice 3 and the race suggested they weren't far ahead and their advantage was clearly from their new engine boost/magic out of corners (that nobody quite understands), i.e. they were fastest in sector 1 but I believe Merc were a match if not better in other areas of the track. Merc meanwhile had a big aero upgrade in Austria and this appears to have helped their slow speed corner performance. They were competitive in sector 3 at Hungary, and Spa aside, even at Monza they were reasonable in the slow speed corners and on traction.
Come Singapore through practice on Friday (and I'll return to this in a minute) Merc (and Hamilton in particular) looked very competitive in sector 2 and 3. Whilst Kimi narrowly beat Lewis in P2, Lewis was faster in S2 and S3 - something we wouldn't have seen in the past. Come P3, Merc didn't look so hooked up, probably because of the hotter temperatures, and Ferrari had a 0.5 second buffer at the end of the session, however, both Merc's had scruffy laps, but crucially between the two of them they set the fastest sector 2 and 3, and were losing about 0.4 in sector 1. I heard Toto say they were still losing a few tenths on the straights compared to Ferrari, which aligns with the sector 1 disadvantage.
Skip qualifying for a minute and looking at the race, Hamilton looked completely comfortable and as Christian Horner admitted after, he was just too fast for Max and had a couple of tenths in hand whenever needed. RB on race pace at least were meant to possibly be fastest, certainly given the fact Max should have matched Lewis' pole lap without engine issues. Ferrari meanwhile showed no evidence whatsoever of being ultra competitive. I realise Seb was stuck in traffic or in tyre management mode for almost the entire race, but it just didn't seem like the dominant car at any point in the weekend.
Finally, I return to qualifying - apparently Vettel had a time in him to get pole according to himself, according to e.g. Mark Hughes in his post race analysis for motorsport magazine, etc. It has started to frustrate me because I do not see the evidence that backs this up; to me Merc appeared to have a better car in sector 2 and 3 all weekend and Ferrari were only gaining on the straights, as they have largely for the past few races. Merc continually say they gain in the corners and lose on the straights. I realise they're better in high speed corners vs low speed, but fundamentally, I think Ferrari do not have such a good car this year compared with RB and Merc, they clearly do not have a bad car, but I think they clearly lose out in the corners on average and often gain on the straights in general acceleration out of corners (partly helped by this new electrical boost trick).
The other point I'll finish on was that I saw Mark Hughes comment on the fact that the Merc still was a handful round Singpapore and was not as well suited to the track as Ferrari. As an example he said Merc "still required more manhandling than ideal, still had an initial reluctance to turn in to the slower turns", whilst Ferrari had "beautiful flow, stunning rear-end grip". Looking at the on boards in both practice 2 and in qualifying I just do not see this and would say the Merc looked much better set up than the Ferrari - I didn't think the Ferrari looked particularly comfortable going through sector 2 and 3. I never saw an on board lap and thought wow, they have everyone covered. But as I previously wrote on here after practice 2, when I saw Hamilton's lap during that session I was astonished at how easily he could turn into the corners and how smooth he was through the tight, twisty sections of the track. He could attack the corners at ease but with an incredibly smoothness to his driving - a complete contrast to previous years. Dare I say it, his car looked to be behaving as Seb's often has in recent years here. So in summary, I think Merc should be given credit for simply having the better car at Singapore - in my opinion they simply had a better car than Ferrari. Just because Ferrari were dominant there in the past does not mean they are still the benchmark on those streets, and I expect Ferrari to be much more competitive at some of the upcoming circuits.