GSM Arena is good for comparing specs. It could be that they're for different markets and may have differences that may or may not be significant, eg you might get the wrong plug on the charger for a start, but having said that, a lot of the time you only get the cable now and you're expected to use an existing plug or buy one separately.
Although I don't know if it's relevant that your links are displaying as amazon.eu but for me at least it automatically clicked through to the UK site.