>Shouldn't the results be the same for everyone?
It might vary, depending on several factors:
The exact moment the search was done.
The search settings, including language options and "SafeSearch".
The version of Google used. For example, when I type www.google.com, I automatically get redirected to www.google.com.bo. "bo" is the country code for Bolivia. Search results favor Spanish-language sites.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)