It depends what you mean by skilful. The traditional meaning was ball at feet, beating players from dead starts, tricky and clever in tight situations. Neither player can really do that. Zohore is good on the turn and is a very strong runner, his best work is done when he's facing the opposition goal, not that great with his back to goal or aerial battles, although if you watch him, he doesn't like contesting headers as he likes to back in, and you can't back in and jump at the same time. He's much happier with the ball at his feet and does a good job acting as a wide player if hoilett plays inside. In my opinion and based on what I've seen, Ken has more capacity to make an impact at a higher level as he has more to his game than Madine. The only way Madine could transfer his attributes to the premier league is if he was used like Sam Vokes at Burnley, with players who were prepared to gamble on the knockdowns and the mistakes his presence can lead to, although I don't think Madine is as mobile or good as vokes is.