Wikidata originates from the German Wikipedia. The idea is good, but the implementation pales in comparison to Freebase (at the moment).
This is the real San Francisco Wikidata page (slow and ugly): https://www.wikidata.org/wiki/Q62
Reasonator takes ages to load and render the content.
That said, while the San Francisco Wikidata page may currently be uglier than its Freebase counterpart, it is not slower. webpagetest.org has the Wikidata page fully loaded at 8.8 s and the Freebase page 11.2 s [2, 3]. And while Reasonator is certainly dog slow (21.2 s to fully load! [4]), its San Francisco page is much more polished than the Freebase's.
[1] http://www.wikidata.org/wiki/Wikidata:UI_redesign_input
[2] http://www.webpagetest.org/result/141218_DR_9W4/