By comforting yourself with the knowledge that the PS3 port had worse aliasing due to even lower resolution.

Played it on the PS3. Great game, choppy framerates, poor resolution. Never going to play an open world controller shooty game without aim assist again (unless it has gyro aiming, kudos to Zelda BotW!). Controller + couch => chill out mode. Is suck at aiming at anything with an analogue stick even harder than with a mouse, especially when it's the size of a bird 30 meters above your character. No shame in assist.
Lack of a PC port of RDR is a damn shame. At least consoles this time may provide decent image quality, especially with the Scorpio or Ps4 Pro around. A PC port with decent graphics options would still help a lot to scale the game as hardware evolves.