As far as I can tell Tevatron was able to identify relative to background an excess in decay processes in the range from 105 to 145 GeV. But what was different with Tevatron that didn't allow it to discover the Higgs before the LHC? The LHC had double the CM-energy but the Higgs could've still been produced at Tevatron. Was the Higgs cross section at Tevatron's 2TeV too low to produce statistically significant results to confirm the Higgs? I have looked around but haven't come across a straight up answer.