That's a bit of a simplistic way to look at it, mate, there are other factors too, like where on the pitch they play and how much of the team is set up to get the best from them. I've seen very little of Lacazette but he doesn't look to have a single outstanding aspect to his game - Welbeck, at least, has his extraordinary acceleration and speed. Put Welbeck in that Lyon team, build it around him, let him settle in and he'd absolutely rip Ligue Une to shreds.