  In this note we analyse the excess in the $W^+W^-$ inclusive cross section
recently measured by the LHC experiments. We point out that in fact for the
ATLAS fiducial cross sections there is no excess in the measurements compared
to the NLO QCD predictions. We also argue that higher order effects to the
fiducial cross section are small, and tend to cancel each other, hence the
inclusion of NNLO and NNLL corrections will not modify this agreement
significantly. We find that at 8 TeV a substantial part of the disagreement
with the NLO prediction for the total cross section observed by ATLAS is due to
the extrapolation carried out with POWHEG.
