Language /
Polish was chosen the HARDEST LANGUAGE in the world to learn... :D [1558]
but it's 100 fold easier to use and learn new English verbs compared to Polish.
I think you didn't quite get my point. I was trying to show that in every language, there are "easier" and "more difficult" bits. For any Slav, the English tense system is an absolute nightmare - probably comparable to what Anglo-Saxons think of inflections ;-)
Also, kindly remember your messy and illogical list of irregular verbs, the multi-tiered system of conditionals, and last but not least - phrasal verbs!
Take off, take on, take out, take in, take away, take for, take from, take to...
Look up, look down, look away, look into, look out, look for, look after, look to...
Plus your bewildering array of idioms and collocations... ;-P
The fact that difficulties in English lie elsewhere doesn't make English "easier" than Polish overall.
English is much more user-friendly at the start, granted. You only need a very rudimentary grasp of grammar plus a handful of verbs and nouns and off you go. This is one of the most important reasons it has been so popular for so long.
Nevertheless, once you try to read a novel or have an intelligent conversation in English...