It’s apples and oranges really, PEA has much more pace and is hence a better counter attacking forward. He’s also better in the air and will score more from set pieces. Higuain is a far better striker of the ball and can score from anywhere around the box regularly and has better close control.
I’d take PEA if both are the same price because PEA gives you 6 years service Higuain 3. So in reality Higuain is twice as expensive per year.
Although I think both are above our budget for a single player.