Wrong PE, English also uses subjonctive, did you miss some of your English classes?
https://en.wikipedia.org/wiki/English_subjunctiveThe way subjunctive is expressed in English is indeed easier, no doubt on that, but that's it, this is frankly the only thing we can concede as "easier" compared to Spanish.
English has a more inconsistent grammar (more irregular verbs than Spanish), inconsistent orthography and spelling (useless frills, blame the French for most of this :P) and a very inconsistent pronunciation (Spanish is pronounced as it is written, even French here is more consistent).
And subjunctive is frankly not that difficult, since Spanish grammar rules are regular, you are making something out of nothing.
If we were just defining the easiest language just by its conjugation system, then Chinese would be the easiest language (no conjugation of verbs, you basically just add a word or affix for past and future tenses and that's it), but does that mean Chinese is easy? Not at all, other factors have to be taken in count.