Now I do not have a precise idea of how much skill and luck influence poker but without a doubt you need both, as there are instances in which it could be almost impossible for your opponent to beat you and they still do so as they just happened to draw the perfect card, but overall if you keep playing with that level of skill then more often than not you will beat your opponent.
This is true, That's why it is important to be good on winning percentage calculation and to read the mind of your opponent on poker because anything can happened if your card is just good in flop while your enemy starts betting high after opening the turn and river.
If you are good on stats. You don't have any problem on this game no matter how your opponent bluff because you knew exactly how strong your card. Most of the poker players pressure their opponent using huge bet during flop so that they will not have any chance to build cards on turn and river.