The nice thing about pixel art for me (as in intentionally low-pixel-count graphics) is that it helps a lot in the suspension of disbelief. Higher pixel counts or higher poly counts do not correlate positively with more immersion.
With regards to immersion, there’s two approaches that I see that work really well:
- go all-out with a 100M+ budget on ultra-realistic 3D graphics and animation a la Call of Duty series (immersion because you are fooled into thinking it is real)
- make it completely unrealistic using a consistent cartoonish style, pixel art or similar approach (immersion because its easy to suspend disbelief)
Using pixel counts or poly counts as a means to determine how well a game looks graphically is such a “technical” way of looking at things… Realism is boring, immersion is what counts for games.
Edit: using pixel art or other unrealistic graphics also means you stimulate the player’s creativity. The human mind is such a wonderful thing, why not understand how it works and use this in game development?