I will get something away before I comment further. I think 30fps is a poor choice, they should have gone with 60fps & tone down the visuals or resolution. With this out of the way I shall continue.
Yes, X1 got a lot of stick for Forza 5 visuals, X1 hardware & 30/60 debate on Tomb Raider. And people are now using these as a fuel to knock DC 30fps. Its certainly fuel for getting back at the Sony fan-boys for knocking X1 & Forza, if you are in this kind of thing.
But when you put out the emotion, common sense will tell you that you cannot compare 2 different games with different settings & declare one if better than the other base on their fps & resolutions. Every game are optimize differently.
Forza choose a smooth frame rate over slightly better visuals (which is to say Forza 5 will look better at 30fps), This is not to say Forza 5 looks bad, but logic tell you that you can push visuals further when you run at lower frame rate. I think the decision is correct.
DC developer choose to go for better visuals & instead lower the frame rate (Which is to say, if they choose 60fps, the visual will take a hit). Who knows which will look better when they run at same setting. I didn't even knwo if DC looks better now (haven't seen much screenshots).
My point being, picking the res/fps is part of optimization. You cannot say if one game runs at 30fps & anoter different game at 60fps, the 2nd game is better, without factoring other optimizations in the games.
Even if I have a machine 5x faster than current gen, I may still opt for 1080/30, at push the visual further. Its a design choice base on hardware. Not unlike how you tune setting on your PC for what you feel best. Almost always, FPS comes first for me, but there are people who will push textures details & res over fps. There is no right or wrong answer.
Purely from a gameplay perspective, I will pick Forza smooth 60fps over DC (Supposely better looking) 30fps. However, at the same time, please do not use this as a fuel for console war or hardware debate as they are optimism differently.
If there is a debate, it should be which is a better choice for you. Smooth fps, or better visuals. As I alraedy mention, for a racing game, FPS for me.
It actually has less to do with the game than you are giving credit for here. Most of the crap is because of the "Moving goal posts" of the posters here. The Hypocritical comments. The " is fine for one but not the other" attitude. It isn;t really about comparing one game to the other.