As someone who’s worked in admissions for a well ranked uni with high entry requirements, I’ve certainly not seen any discrepancies between Indian and other international applicants. We advertise our requirements and anyone that meets them gets considered.
Refs are universally fine and in most cases the least important aspect of an app.
Indian applicants typically have significantly more extra curricular activities. Although you could argue that they lose focus on super curriculars.
Personal Statements are often a bit of a sticking point as they fall into the trap of being too autobiographical. Anyone that has read about countless Indian applicants discussing the subject over the dinner table will be aware of this.
So broadly we could say the PS’s receive less decent coaching, but there are countless sources of info if you look for them.