Its hard to jugde based off of what we saw.
I took 2 screenshots of closeup ingame graphics, of characters from the trailers.
I think the Cel-shadeing looks better in Persona 5 (its really thick, and makes them look cartoony) (that black border line around the edge of the characters).
The colours and dark atmosphere is more appealing I think.
Persona 5:

SMTxFE:








