They lost Man U, Juve, and last season Arsenal. They lost big clubs and what they gain is roma..
I don't really like EPL, but Man U sells jerseys like crazy.
Adidas have: Chelsea, Madrid, Juve, Bayern, Man U
Nike have: Barca, Man City, Roma, Inter, PSG (Only "big club" is Barca)
It's clear that Nike has lost big this year.