If that house edge blows your mind don't ever go to Vegas. You might have a heart attack. I say this because I care about your health, because you seem to not understand simple things. if you choose to gamble that's on YOU not Freebitco. Roulette often has 4.5%+ house edge.
And dont let you do the comparison charts because an online casino is NOTHING like brick/mortar that has millions tied up in overhead. The HIGH end for a house edge online is 1% while most normal online sites use 0.05 to 0.5