Poker is absolutely about a chance, you can play your hand perfectly make right calls and loose. Because someone got lucky on a last card.

The whole idea in poker is to make the most right plays that on average should get you the win. Its management to chances.

There are no hidden information in chess, if you play better moves you will win.

And while there are factors that affect selection of best chess moves, you can hardly claim that the other guy got lucky.