The final experience have to take into account all of that.

Sure it does, but that doesnt mean that you can't make a comparison.

all those features may hold higher value than more ram.

The VRAM may actually be a deal breaker if you look at the trend of current games and how many games have problems with even modest settings especially at higher resolutions like they've said this will support.

It’s like comparing two cars looking only at the engine. Discarding of one has AC and the others don’t.

Not at all. Its comparing the engines understanding that they are obviously different, but selectively talking about one aspect. You can bring up the other aspects but its not unfair to make the comparison.

Maybe for a thinkerer that could be a sensible comparison but for a non thinkerer like myself now (I used to be) those features holds a lot of value.

This has nothing to do with tinkering and everything to do with if this can deliver a good value for money for any sizeable target market.

If it only applies to a small niche, it can't be a successful product and wont do what they want it to do.

If it can't adequately pass the baseline, its out of steam before the starter gun fires.