The CPE discursive essay demands a higher standard than the B2 FCE equivalent. At C2 you are expected to demonstrate a sophisticated argument, a wider range of cohesive devices, and complete register consistency.
Word target
180–220 words (longer than FCE — more space for argument development)
Register
Fully formal throughout: no contractions, no colloquial vocabulary, no personal register shifts
Argumentation
State, support, acknowledge, respond, conclude — a 5-move structure
C2 marker
Sophisticated cohesion, nominalisation, hedging, impersonal structures, varied sentence architecture