Westgate outperformed kings?

[kwiksand]

Looking at the provisional 2018 results it seems Westgate outperformed kings. I was suprised because I have read numerous times that kings is more academic?

Yes. Although your general assessment of the schools' characters is the local opinion too, it is also well known that both schools achieve similar (very good) results. Kings does have a reputation for academic pressure vs. Westgate which is perceived as more relaxed.

The other secondary in Winchester is Henry Beaufort. It's a bit further down the list but still at +60% for 5 A* - C (in old money). Thornden, the no. 2 school, is only a few miles south of Winchester.

this may be where you were looking already but:
www.compare-school-performance.service.gov.uk/schools-by-type?step=default&table=schools®ion=850&laname=hampshire&geographic=la&for=secondary&datasetFilter=provisional&orderby=ks4prov.0.ATT8SCR&orderdir=asc&datatype=integer&sortpolicy=inversepolicy