On Tue, Mar 10, 2015 at 6:17 PM, Markus Krötzsch <markus@semantic-mediawiki.org> wrote:
TL;DR: No concrete issues with SPARQL were mentioned so far; OTOH many *simple* SPARQL queries are not possible in WDQ; there is still time to restrict ourselves -- let's give SPARQL a chance before going back.

TLDR, so SPARQL is the one true way.
Nik and Stas have made a careful analysis of the options, ...

citation please