Really?
You rate English as easy, based off its lack of grammatical gender. Fair enough (as someone who did German in school, I hated grammatical gender with a passion). Problem is, Finnish doesn't have a grammatical gender either. Or a future tense. And vanishingly few prepositions. And, unlike English, it actually obeys grammatical gender, and is nearly completely phonetic. Finnish ought to be the easiest language in the world, by your reasoning... except that it is commonly considered one of the hardest (on account of the fourteen cases thing. Which is unfair. The nastiest thing about Finnish is the consonant mutation).
I'd say it's really swings and roundabouts. What makes English uniquely easy, I think, is that it is so easy to achieve the all-important immersion. English is everywhere.