Persian grammar is very easy. Russian grammar is extremely difficult. They both have different alphabets. They both have mostly unfamiliar vocabulary.
Persian language is not as hard as you think
So, you may wonder how hard it is. From the point of view of someone who doesn't know the Persian script, it can be intimidating at first. Yet, Persian is actually not a hard language to learn, at least for people speaking an Indo-European language.
Learning Russian is quite an experience because of the intricate case and gender system, different grammatical rules and novel writing system. It is easy to make errors in pronunciation and spelling when learning this language. Thus, Russian can be considered as one of the most difficult language.
Both are Indo-European, one Slavic, one Iranian, so they share some vocabulary. Beyond this, however, they aren't very similar; in terms of grammar, it is hard to think of something that they have in common.
As far as trouble learning, Arabic is more difficult than Russian. It has a few distinct lingos, so learning one doesn't imply that everybody will understand you. (In the first place, you need to learn MSA then pick a lingo you need to learn.)
Greek is a relatively difficult language to master, even more so for English speakers. But it's still easier to learn than Russian or Arabic. The reason many English speakers find Greek to be so difficult is that it's not closely related to the English language.
Tajik is closely related to Dari and Farsi. It is the official language of the Republic of Tajikistan but is also spoken in parts of Iran, Afghanistan, Uzbekistan, Kazakhstan, Kyrgyzstan, and China.
Luri and Bakhtiari, languages in the southwest part of Iran, are most closely related Farsi, but these are difficult for a speaker of the Teheran standard to understand . While speakers of Luri regard their speech as a dialect of Persian, speakers of Farsi do not agree.
Ukrainian and Belarusian are the closest languages, as together with Russian they form the East Slavic group of languages. These three languages have an 86% lexical similarity; that is, they share 86% of the same words.
One reason Mandarin is seen as the most challenging language to learn is because its writing system uses characters that might be difficult to grasp for those accustomed to writing with the Latin alphabet, Babbel says.
FLUENT (C2)
Once you have reached this level, you are free to go in any direction: read Russian news, articles and books, listen to podcasts, watch Russian television and communicate with native speakers comfortably. It is the level of Native, or Bilingual proficiency.
Learning the Arabic script is definitely one of the hardest aspects of learning Persian. Arabic script is always cursive, it means letters connect to the other letters before and after them. This feature makes recognizing letters more difficult. Verbs are conjugated in Persian.
According to a UNESCO survey, Bengali has been classified as the sweetest language in the world.
Persian is a very poetic, soft and song-like language and has been described as one of the most beautiful languages of the world.
Approximately 110 million people worldwide speak Farsi, with populations of Farsi speakers concentrated in Iran, Afghanistan, and Tajikistan. In Afghanistan, the language is officially known as Dari, and in Tajikistan, it is known as Tajiki.
It may instead derive from a Pahlavi dialect once spoken in northeast Iran. Old Persian, by contrast, and its immediate descendant Middle Persian, originated in a province in southwest Iran that was once the center of the Persian Empire – Parsa or Fars, hence the contemporary Persian name of the language: Farsi.
Renaissance Europe (re)discovered Persia and its language. Despite the supposed Semitic nature of Persian, some striking lexical similarities between this language and the Germanic languages became unmistakable to many Western scholars.
The Persian word “Salam” means “Hello”. Greetings may involve a handshake with the right hand only. Men and women generally will not shake hands unless the female outstretches her hand first and the man is willing to reciprocate the gesture.
Professor Mahmoud Hessaby demonstrated that Persian can derive more than 226 million words.
Compared to Turkish, Persian has been more heavily influenced by Arabic, but like Turkish, the language structure and grammar hasn't been affected by Arabic, and the speakers of Persian cannot communicate with Arabic speakers using Persian language and vice versa.
After reading through all the differences, Russian probably comes across as the easier language to learn. And it is! For native English speakers, Russian is categorized as taking 44 weeks to learn (or 1,100 hours), while Japanese takes 88 weeks (2,200 hours).
Of all the European languages a native English speaker can learn, Russian is among the most difficult. The Germanic and Romance languages have a lot of the same core because they both have roots in Latin. Russian is from a completely different language branch called the Slavonic branch, which includes Czech and Polish.
According to Language Difficulty Ranking, studying Russian will take you 1100 hours. It is quite challenging compared to Dutch, French or Italian (600 hours), but twice as easy as studying Arabic, Chinese or Japanese.