I am honestly surprised it's so even.
Sesko has more natural ability, but he is years away from translating that to being a better player. He'd be similar to Højlund in the sense that you're paying for his potential without accounting for the cost in development minutes you can't afford to give him, nor the risk of him falling into a downturn due to being expected to do too much too soon.
His lacking development is also the kind you simply don't want, especially in the Premier league. He struggles to impose himself on games and spends far too much time simply not participating in a meaningful way.
Watkins knows the league, is experienced, scores goals, assists and would be a good foil and focal point for 3-4 seasons. He's a no brainer for the kind of investment plan that says "let's secure back to back CL qualification and then look at the next level of investment ".
You need a well oiled Audi ready to go, no matter the mileage. Not a porsche missing parts and hoping you can fix it during the race.