Under Pearson we played each and every formation that was
ever invented and some, that nobody had ever seen before.
4-4-2 was only one of them.
The result of all that tinkering was that we spent more than
4 months at the bottom of the table. During the 'Great
Escape' we played 3-5-2, not 4-4-2.
Ranieri didn't simply use the same squad from the
season before. He turned Drinkwater and Simpson (who
didn't play a single minute during the 'Great Escape')
from bench-sitters into starters and integrated Fuchs,
Okazaki and Kante into the team.
And he decided to play 4-4-2, instead of 3-5-2.
You are obviously a die-hard Pearson fan, but you should,
at least, get your facts right.