Student or Learner
What does it mean by saying "But the XXX people proved to a storppy lot"? is that different from "proved to be very stroppy"?
In case you were wondering: "a stroppy lot" means "a stroppy lot of people", not that they were "a lot stroppy", which isn't a proper construction.
stroppy - definition of stroppy by the Free Online Dictionary, Thesaurus and Encyclopedia.
It doesn't say they were "very stroppy" in the main sentence. If it meant that, it would have said "... proved to be a very stroppy lot". "Lot" is not used here in the same way as "a lot" meaning "many". It is a noun and it means "group of people".
The XXX people proved to be a stroppy group of people.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.