I agree with you outside of AAA game prices on consoles. AAA singleplayer games on console are far cheaper than PC after a shorter period of time since people buy it and flip it on the used market.
Where PC's are cheaper are with indie titles typically since you aren't limited to the XBOX/Playerstation/Nintendo shops on the console.
Fair point if you include the secondary market. We'll see how long that remains a thing though, as that may change if they try to shift the console market to digital download to save on publishing costs, shift players to upgrade to models with larger hard drives, and knock out this secondary market. I'm not saying they WILL do this, but it's a possibility. In the meantime though, very fair point.