When online: House Blackjack is much faster and there are no distractions from other players, so it seems much better.
Live online blackjack is what being referred here not the physical blackjack that you can play IRL casino. I think even on IRL casino players is not allowed to distract others or else you will get kicked out. The pressure is much higher on physical casino table games since you are dealing face to face against the dealer.
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Overall, Live in a real casino is best, but the table minimums are much higher than online, so the money needed is sometimes way too high. Basically, online House is cheaper and super fast with no need to have to get to a casino. I finally played so much I will be spending time on other things. 
I agree, minimum bet on IRL casino table games is much higher but this is because they are paying many expenses compared to house blackjack that operates automatically based on the code design. Also only few play nowadays on the minimum range.