The way they handled it was perfect. For over 20 minutes each, the presenters for CMS and Atlas explained their measurement capabilities, methods, recent improvements, and recorded measurements before stating their conclusion. They made sure to cover their bases and justify the conclusion before making a big announcement. I'm pretty sure the abstract for the papers will state the conclusion early on but the initial announcement for the greatest achievement in Particle Physics shouldn't be prefaced with "We found it!" just for the convenience of the impatient.