Greasy Fork is available in English.
See https://greasyfork.org/forum/discussion/449/gsmarena-com-a-script-to-highlight-rows-with-differences-when-comparing-phones
Posted in response to this request: https://greasyfork.org/forum/discussion/449/gsmarena-com-a-script-to-highlight-rows-with-differences-when-comparing-phones