Hearthstone - Just Pay 2 win?

Hey guys,

I've downloaded Hearthstone just a few hours ago.
I played in back in the time for a little while and i liked it basically.
Now i just think its 100% Pay2win. I always get enemies with overpowered cards and me, without spending money, doesnt even get a chance of winning with the basic decks.

Is it just me playing so bad orare the just toomuch players with an op build and not really an "undercover ranking system" in the unranked game?
What do you think?