Page 2: The SFitter framework was developed for the determination of supersymmetric parameters. As similar questions arise in the Higgs coupling determination at the LHC, multi-parameter space, errors, correlations among errors, the algorithms were applied to the Higgs sector at the LHC Page 3: The scenario is: 30fb-1 of well understood data at 14TeV. A Higgs boson of 120GeV has been discovered. The subjet analysis is used and the old ttH(->bb) analysis has its sensitivity reduced by 50%. Page 4: Experimental errors, errors on the background, theory errors and their correlations are taken into account. A difficulty are the low signal rates necessitating the combination of Poisson plus Gaussian errors. Page 5: The RFit scheme is used for the theory errors. The parameters are defined as deviations from the Standard Model Higgs couplings. Page 6: A full likelihood map is calculated. In the frequentist projection with anomalous couplings onloy allowed in tree level decays, positive correlations are observed among all couplings as well as a sign preference for the correct solution (due to gammagamma). Page 7: Adding effective anomalous couplings, the sign preference does not exits anymore and the pseudo scondary solutions multiply. Page 8: The impact of an increase of the minijet veto error by a factor 20 leads to a non-vanishing proabability of a tautauH coupling measurement of zero Page 9: The subjet analysis, confirmed within 10% by ATLAS, has a significant impact on the coupling measurement at mh=120GeV. Page 10: An observed (as opposed to invisible) channel cannot be distinguished from a coherent anomalous coupling reduction for all couplings due to the structure of the observables at the LHC. Page 11: The precision on the coupling determination is 30-50% at the LHC. Page 12: The errors on the ratios are slightly better as some common errors cancel out. Page 13: The coupling measurements have sensitivity to new physics.